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Virtanen J, Korhonen EM, Salonen S, Vapalahti O, Sironen T, Jääskeläinen AJ. SARS-CoV-2 infections among pregnant women, 2020, Finland-Cross-testing of neutralization assays. J Med Virol 2024; 96:e29415. [PMID: 38293724 DOI: 10.1002/jmv.29415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/20/2023] [Accepted: 01/10/2024] [Indexed: 02/01/2024]
Abstract
We studied the development of the severe acute respiratory syndrome-related coronavirus (SARS-CoV-2) pandemic in southern Finland in 2020 and evaluated the performance of two surrogate immunoassays for the detection of neutralizing antibodies (NAbs). The data set consisted of 12 000 retrospectively collected samples from pregnant women in their first trimester throughout 2020. All the samples were initially screened for immunoglobulin G (IgG) with SARS-CoV-2 spike antibody assay (EIM-S1, Euroimmun) followed by confirmation with nucleocapsid antibody assay (Architect SARS-CoV-2, Abbott). Samples that were reactive (positive or borderline) with both assays were subjected to testing with commercial surrogate immunoassays of NeutraLISA (EIM) and cPassTM (GenScript Biotech Corporation) by using pseudoneutralization assay (PNAbA) as a golden standard. No seropositive cases were detected between January and March. Between April and December, IgG (EIM-S1 and Abbott positive) and NAb (PNAbA positive) seroprevalences were between 0.4% and 1.4%. NeutraLISA showed 90% and cPass 55% concordant results with PNAbA among PNAbA negative samples and 49% and 92% among PNAbA positive samples giving NeutraLISA better specificity but lower sensitivity than cPass. To conclude, seroprevalence in pregnant women reflected that of the general population but the variability of the performance of serological protocols needs to be taken into account in inter-study comparison.
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Affiliation(s)
- Jenni Virtanen
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - Essi M Korhonen
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - Sami Salonen
- HUS Diagnostic Center, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Olli Vapalahti
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- Department of Virology, University of Helsinki, Helsinki, Finland
- HUS Diagnostic Center, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Tarja Sironen
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - Anne J Jääskeläinen
- HUS Diagnostic Center, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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2
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Alburkat HAT, Pulkkinen E, Virtanen J, Vapalahti O, Sironen T, Jääskeläinen AJ. Serological and molecular screening of arenaviruses in suspected tick-borne encephalitis cases in Finland. Epidemiol Infect 2024; 152:e20. [PMID: 38250808 PMCID: PMC10894894 DOI: 10.1017/s0950268824000128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024] Open
Abstract
Lymphocytic choriomeningitis virus (LCMV) is one of the arenaviruses infecting humans. LCMV infections have been reported worldwide in humans with varying levels of severity. To detect arenavirus RNA and LCMV-reactive antibodies in different geographical regions of Finland, we screened human serum and cerebrospinal fluid (CSF) samples, taken from suspected tick-borne encephalitis (TBE) cases, using reverse transcriptase polymerase chain reaction (RT-PCR) and immunofluorescence assay (IFA). No arenavirus nucleic acids were detected, and the overall LCMV seroprevalence was 4.5%. No seroconversions were detected in paired serum samples. The highest seroprevalence (5.2%) was detected among individuals of age group III (40-59 years), followed by age group I (under-20-year-olds, 4.9%), while the lowest seroprevalence (3.8%) was found in age group IV (60 years or older). A lower LCMV seroprevalence in older age groups may suggest waning of immunity over time. The observation of a higher seroprevalence in the younger age group and the decreasing population size of the main reservoir host, the house mouse, may suggest exposure to another LCMV-like virus in Finland.
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Affiliation(s)
- Hussein Abas Thamer Alburkat
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Emilia Pulkkinen
- HUS Diagnostic Center, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
- ISLAB Laboratory Centre, Kuopio, Finland
| | - Jenni Virtanen
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Olli Vapalahti
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
- HUS Diagnostic Center, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - Tarja Sironen
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - A J Jääskeläinen
- HUS Diagnostic Center, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
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Lehikoinen J, Valori M, Jääskeläinen AJ, Laakso SM, Arstila TP, Tienari PJ. High Epstein-Barr virus capsid antigen IgG level associates with the carriership of CD8+ T cell somatic mutations in the STAT3 SH2 domain. Clin Immunol 2023; 255:109733. [PMID: 37572949 DOI: 10.1016/j.clim.2023.109733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/03/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
High carrier prevalence of STAT3 SH2 domain somatic mutations was recently discovered in CD8+ T cells. We found these low-allele-fraction clones in 26% of donors, without difference between multiple sclerosis (MS) patients and controls. Here we tested whether anti-viral antibodies associate with the carriership of these mutant clones. We compared antibody responses against common viruses in mutation carriers vs. non-carriers. Plasma samples of 152 donors (92 MS patients, 60 controls) were analyzed for antibodies against cytomegalovirus (CMV), Epstein-Barr virus (EBV), human herpesvirus-6A and parvovirus B19. The mutation carrier status associated with EBV VCA IgG level (p = 0.005) and remained significant after logistic regression (p = 0.036). This association was contributed similarly by MS patients and controls. These results suggest that EBV contributes to the generation or growth of these clones. The pathogenic role of the STAT3 mutant clones in MS is presently unclear, but their detailed characterization warrants further study.
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Affiliation(s)
- Joonas Lehikoinen
- Translational Immunology Research Program, University of Helsinki, Helsinki, Finland; Department of Neurology, Brain Center, Helsinki University Hospital, Helsinki, Finland.
| | - Miko Valori
- Translational Immunology Research Program, University of Helsinki, Helsinki, Finland
| | - Anne J Jääskeläinen
- HUS Diagnostic Center, Clinical Microbiology, University of Helsinki and Helsinki University Hospital
| | - Sini M Laakso
- Translational Immunology Research Program, University of Helsinki, Helsinki, Finland; Department of Neurology, Brain Center, Helsinki University Hospital, Helsinki, Finland
| | - T Petteri Arstila
- Translational Immunology Research Program, University of Helsinki, Helsinki, Finland; Department of Bacteriology and Immunology, Medicum, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Pentti J Tienari
- Translational Immunology Research Program, University of Helsinki, Helsinki, Finland; Department of Neurology, Brain Center, Helsinki University Hospital, Helsinki, Finland
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4
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Masika MM, Korhonen EM, Smura T, Uusitalo R, Ogola J, Mwaengo D, Jääskeläinen AJ, Alburkat H, Gwon YD, Evander M, Anzala O, Vapalahti O, Huhtamo E. Serological Evidence of Exposure to Onyong-Nyong and Chikungunya Viruses in Febrile Patients of Rural Taita-Taveta County and Urban Kibera Informal Settlement in Nairobi, Kenya. Viruses 2022; 14:v14061286. [PMID: 35746757 PMCID: PMC9230508 DOI: 10.3390/v14061286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/28/2022] [Accepted: 06/08/2022] [Indexed: 02/01/2023] Open
Abstract
Several alphaviruses, such as chikungunya (CHIKV) and Onyong-nyong (ONNV), are endemic in Kenya and often cause outbreaks in different parts of the country. We assessed the seroprevalence of alphaviruses in patients with acute febrile illness in two geographically distant areas in Kenya with no previous record of alphavirus outbreaks. Blood samples were collected from febrile patients in health facilities located in the rural Taita-Taveta County in 2016 and urban Kibera informal settlement in Nairobi in 2017 and tested for CHIKV IgG and IgM antibodies using an in-house immunofluorescence assay (IFA) and a commercial ELISA test, respectively. A subset of CHIKV IgG or IgM antibody-positive samples were further analyzed using plaque reduction neutralization tests (PRNT) for CHIKV, ONNV, and Sindbis virus. Out of 537 patients, 4 (0.7%) and 28 (5.2%) had alphavirus IgM and IgG antibodies, respectively, confirmed on PRNT. We show evidence of previous and current exposure to alphaviruses based on serological testing in areas with no recorded history of outbreaks.
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Affiliation(s)
- Moses Muia Masika
- KAVI Institute of Clinical Research, University of Nairobi, POB 19676, Nairobi 00202, Kenya; (J.O.); (O.A.)
- Department of Medical Microbiology, University of Nairobi, POB 19676, Nairobi 00202, Kenya;
- Correspondence: ; Tel.: +254-721770306
| | - Essi M. Korhonen
- Department of Virology, University of Helsinki, 00014 Helsinki, Finland; (E.M.K.); (T.S.); (R.U.); (A.J.J.); (H.A.); (O.V.); (E.H.)
- Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland
| | - Teemu Smura
- Department of Virology, University of Helsinki, 00014 Helsinki, Finland; (E.M.K.); (T.S.); (R.U.); (A.J.J.); (H.A.); (O.V.); (E.H.)
- HUS Diagnostic Center, HUSLAB, Virology and Immunology, Helsinki University Hospital, 00029 Helsinki, Finland
| | - Ruut Uusitalo
- Department of Virology, University of Helsinki, 00014 Helsinki, Finland; (E.M.K.); (T.S.); (R.U.); (A.J.J.); (H.A.); (O.V.); (E.H.)
- Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland
- Department of Geosciences and Geography, University of Helsinki, 00014 Helsinki, Finland
| | - Joseph Ogola
- KAVI Institute of Clinical Research, University of Nairobi, POB 19676, Nairobi 00202, Kenya; (J.O.); (O.A.)
- Department of Medical Microbiology, University of Nairobi, POB 19676, Nairobi 00202, Kenya;
| | - Dufton Mwaengo
- Department of Medical Microbiology, University of Nairobi, POB 19676, Nairobi 00202, Kenya;
| | - Anne J. Jääskeläinen
- Department of Virology, University of Helsinki, 00014 Helsinki, Finland; (E.M.K.); (T.S.); (R.U.); (A.J.J.); (H.A.); (O.V.); (E.H.)
- HUS Diagnostic Center, HUSLAB, Virology and Immunology, Helsinki University Hospital, 00029 Helsinki, Finland
| | - Hussein Alburkat
- Department of Virology, University of Helsinki, 00014 Helsinki, Finland; (E.M.K.); (T.S.); (R.U.); (A.J.J.); (H.A.); (O.V.); (E.H.)
| | - Yong-Dae Gwon
- Department of Clinical Microbiology, Umeå University, 90185 SE Umeå, Sweden; (Y.-D.G.); (M.E.)
| | - Magnus Evander
- Department of Clinical Microbiology, Umeå University, 90185 SE Umeå, Sweden; (Y.-D.G.); (M.E.)
| | - Omu Anzala
- KAVI Institute of Clinical Research, University of Nairobi, POB 19676, Nairobi 00202, Kenya; (J.O.); (O.A.)
- Department of Medical Microbiology, University of Nairobi, POB 19676, Nairobi 00202, Kenya;
| | - Olli Vapalahti
- Department of Virology, University of Helsinki, 00014 Helsinki, Finland; (E.M.K.); (T.S.); (R.U.); (A.J.J.); (H.A.); (O.V.); (E.H.)
- Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland
- HUS Diagnostic Center, HUSLAB, Virology and Immunology, Helsinki University Hospital, 00029 Helsinki, Finland
| | - Eili Huhtamo
- Department of Virology, University of Helsinki, 00014 Helsinki, Finland; (E.M.K.); (T.S.); (R.U.); (A.J.J.); (H.A.); (O.V.); (E.H.)
- Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland
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5
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Ahava MJ, Jarva H, Jääskeläinen AJ, Lappalainen M, Vapalahti O, Kurkela S. Rapid increase in SARS-CoV-2 seroprevalence during the emergence of Omicron variant, Finland. Eur J Clin Microbiol Infect Dis 2022; 41:997-999. [PMID: 35484359 PMCID: PMC9049924 DOI: 10.1007/s10096-022-04448-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 04/19/2022] [Indexed: 11/03/2022]
Affiliation(s)
- Maarit J Ahava
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, P.O.B. 720 (Topeliuksenkatu 32), N00029 HUS, Helsinki, Finland.
| | - Hanna Jarva
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, P.O.B. 720 (Topeliuksenkatu 32), N00029 HUS, Helsinki, Finland.,Translational Immunology Research Program and Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | - Anne J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, P.O.B. 720 (Topeliuksenkatu 32), N00029 HUS, Helsinki, Finland
| | - Maija Lappalainen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, P.O.B. 720 (Topeliuksenkatu 32), N00029 HUS, Helsinki, Finland
| | - Olli Vapalahti
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, P.O.B. 720 (Topeliuksenkatu 32), N00029 HUS, Helsinki, Finland.,Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Satu Kurkela
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, P.O.B. 720 (Topeliuksenkatu 32), N00029 HUS, Helsinki, Finland
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6
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Ahava MJ, Kurkela S, Kuivanen S, Lappalainen M, Jarva H, Jääskeläinen AJ. Detection of SARS-CoV-2 nucleocapsid antigen from serum can aid in timing of COVID-19 infection. J Virol Methods 2022; 302:114469. [PMID: 35051445 PMCID: PMC8762868 DOI: 10.1016/j.jviromet.2022.114469] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/11/2022] [Accepted: 01/16/2022] [Indexed: 12/01/2022]
Abstract
SARS-CoV-2 RNA can be detected in respiratory samples for weeks after onset of COVID-19 disease. Therefore, one of the diagnostic challenges of PCR positive cases is differentiating between acute COVID-19 disease and convalescent phase. The presence of SARS-CoV-2 nucleocapsid antigen in serum and plasma samples of COVID-19 patients has been demonstrated previously. Our study aimed to characterize the analytical specificity and sensitivity of an enzyme-linked immunosorbent assay (Salocor SARS-CoV-2 Antigen Quantitative Assay Kit© (Salofa Ltd, Salo, Finland)) for the detection of SARS-CoV-2 nucleocapsid antigen in serum, and to characterize the kinetics of antigenemia. The evaluation material included a negative serum panel of 155 samples, and 126 serum samples from patients with PCR-confirmed COVID-19. The specificity of the Salocor SARS-CoV-2 serum nucleocapsid antigen test was 98.0 %. In comparison with simultaneous positive PCR from upper respiratory tract (URT) specimens, the test sensitivity was 91.7 %. In a serum panel in which the earliest serum sample was collected two days before the collection of positive URT specimen, and the latest 48 days after (median 1 day post URT sample collection), the serum N antigen test sensitivity was 95.6 % within 14 days post onset of symptoms. The antigenemia resolved approximately two weeks after the onset of disease and diagnostic PCR. The combination of simultaneous SARS-CoV-2 antigen and antibody testing appeared to provide useful information for timing of COVID-19. Our results suggest that SARS-CoV-2 N-antigenemia may be used as a diagnostic marker in acute COVID-19.
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Affiliation(s)
- M J Ahava
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland.
| | - S Kurkela
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - S Kuivanen
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - M Lappalainen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - H Jarva
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland; Translational Immunology Research Program and Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | - A J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
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7
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Jalkanen P, Pasternack A, Maljanen S, Melén K, Kolehmainen P, Huttunen M, Lundberg R, Tripathi L, Khan H, Ritvos MA, Naves R, Haveri A, Österlund P, Kuivanen S, Jääskeläinen AJ, Kurkela S, Lappalainen M, Rantasärkkä K, Vuorinen T, Hytönen J, Waris M, Tauriainen S, Ritvos O, Kakkola L, Julkunen I. A Combination of N and S Antigens With IgA and IgG Measurement Strengthens the Accuracy of SARS-CoV-2 Serodiagnostics. J Infect Dis 2021; 224:218-228. [PMID: 33905505 PMCID: PMC8135300 DOI: 10.1093/infdis/jiab222] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 04/21/2021] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Primary diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is based on detection of virus RNA in nasopharyngeal swab samples. In addition, analysis of humoral immunity against SARS-CoV-2 has an important role in viral diagnostics and seroprevalence estimates. METHODS We developed and optimized an enzyme immunoassays (EIA) using SARS-CoV-2 nucleoprotein (N), S1 and receptor binding domain (RBD) of the viral spike protein, and N proteins from SARS, Middle East respiratory syndrome (MERS), and 4 low-pathogenic human CoVs. Neutralizing antibody activity was compared with SARS-CoV-2 IgG, IgA, and IgM EIA results. RESULTS The sensitivity of EIA for detecting immune response in COVID-19 patients (n = 101) was 77% in the acute phase and 100% in the convalescent phase of SARS-CoV-2 infection when N and RBD were used as antigens in IgG and IgA specific EIAs. SARS-CoV-2 infection significantly increased humoral immune responses against the 229E and NL63 N proteins. S1 and RBD-based EIA results had a strong correlation with microneutralization test results. CONCLUSIONS The data indicate a combination of SARS-CoV-2 S1 or RBD and N proteins and analysis of IgG and IgA immunoglobulin classes in sera provide an excellent basis for specific and sensitive serological diagnostics of COVID-19.
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Affiliation(s)
- Pinja Jalkanen
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Arja Pasternack
- Department of Physiology, Biomedicum, University of Helsinki, Helsinki, Finland
| | - Sari Maljanen
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Krister Melén
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
- Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Pekka Kolehmainen
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Moona Huttunen
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Rickard Lundberg
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Lav Tripathi
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Hira Khan
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Mikael A Ritvos
- Department of Physiology, Biomedicum, University of Helsinki, Helsinki, Finland
- School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
- Nordic SARS Response AB, Stockholm, Sweden
| | - Rauno Naves
- Department of Physiology, Biomedicum, University of Helsinki, Helsinki, Finland
| | - Anu Haveri
- Finnish Institute for Health and Welfare, Helsinki, Finland
| | | | - Suvi Kuivanen
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - Anne J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - Satu Kurkela
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - Maija Lappalainen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | | | - Tytti Vuorinen
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
- Turku University Hospital, Clinical Microbiology, Turku, Finland
| | - Jukka Hytönen
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
- Turku University Hospital, Clinical Microbiology, Turku, Finland
| | - Matti Waris
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
- Turku University Hospital, Clinical Microbiology, Turku, Finland
| | - Sisko Tauriainen
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Olli Ritvos
- Department of Physiology, Biomedicum, University of Helsinki, Helsinki, Finland
| | - Laura Kakkola
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
| | - Ilkka Julkunen
- Institute of Biomedicine, Infections and Immunology Unit, University of Turku, Turku, Finland
- Turku University Hospital, Clinical Microbiology, Turku, Finland
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8
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Benschop KSM, Broberg EK, Hodcroft E, Schmitz D, Albert J, Baicus A, Bailly JL, Baldvinsdottir G, Berginc N, Blomqvist S, Böttcher S, Brytting M, Bujaki E, Cabrerizo M, Celma C, Cinek O, Claas ECJ, Cremer J, Dean J, Dembinski JL, Demchyshyna I, Diedrich S, Dudman S, Dunning J, Dyrdak R, Emmanouil M, Farkas A, De Gascun C, Fournier G, Georgieva I, Gonzalez-Sanz R, van Hooydonk-Elving J, Jääskeläinen AJ, Jancauskaite R, Keeren K, Fischer TK, Krokstad S, Nikolaeva-Glomb L, Novakova L, Midgley SE, Mirand A, Molenkamp R, Morley U, Mossong J, Muralyte S, Murk JL, Nguyen T, Nordbø SA, Österback R, Pas S, Pellegrinelli L, Pogka V, Prochazka B, Rainetova P, Van Ranst M, Roorda L, Schuffenecker I, Schuurman R, Stoyanova A, Templeton K, Verweij JJ, Voulgari-Kokota A, Vuorinen T, Wollants E, Wolthers KC, Zakikhany K, Neher R, Harvala H, Simmonds P. Molecular Epidemiology and Evolutionary Trajectory of Emerging Echovirus 30, Europe. Emerg Infect Dis 2021; 27:1616-1626. [PMID: 34013874 PMCID: PMC8153861 DOI: 10.3201/eid2706.203096] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
In 2018, an upsurge in echovirus 30 (E30) infections was reported in Europe. We conducted a large-scale epidemiologic and evolutionary study of 1,329 E30 strains collected in 22 countries in Europe during 2016-2018. Most E30 cases affected persons 0-4 years of age (29%) and 25-34 years of age (27%). Sequences were divided into 6 genetic clades (G1-G6). Most (53%) sequences belonged to G1, followed by G6 (23%), G2 (17%), G4 (4%), G3 (0.3%), and G5 (0.2%). Each clade encompassed unique individual recombinant forms; G1 and G4 displayed >2 unique recombinant forms. Rapid turnover of new clades and recombinant forms occurred over time. Clades G1 and G6 dominated in 2018, suggesting the E30 upsurge was caused by emergence of 2 distinct clades circulating in Europe. Investigation into the mechanisms behind the rapid turnover of E30 is crucial for clarifying the epidemiology and evolution of these enterovirus infections.
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9
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Kareinen L, Ogola J, Kivistö I, Smura T, Aaltonen K, Jääskeläinen AJ, Kibiwot S, Masika MM, Nyaga P, Mwaengo D, Anzala O, Vapalahti O, Webala PW, Forbes KM, Sironen T. Range Expansion of Bombali Virus in Mops condylurus Bats, Kenya, 2019. Emerg Infect Dis 2021; 26:3007-3010. [PMID: 33219788 PMCID: PMC7706938 DOI: 10.3201/eid2612.202925] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Previously identified only in Sierra Leone, Guinea, and southeastern Kenya, Bombali virus–infected Mops condylurus bats were recently found »750 km away in western Kenya. This finding supports the role of M. condylurus bats as hosts and the potential for Bombali virus circulation across the bats’ range in sub-Saharan Africa.
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Alburkat H, Jääskeläinen AJ, Barakat AM, Hasony HJ, Sironen T, Al-Hello H, Smura T, Vapalahti O. Lymphocytic Choriomeningitis Virus Infections and Seroprevalence, Southern Iraq. Emerg Infect Dis 2021; 26:3002-3006. [PMID: 33219805 PMCID: PMC7706927 DOI: 10.3201/eid2612.201792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Acute febrile neurological infection cases in southern Iraq (N = 212) were screened for lymphocytic choriomeningitis virus (LCMV). Two LCMV IgM-positive serum samples and 2 cerebrospinal fluid samples with phylogenetically distinct LCMV strains were found. The overall LCMV seroprevalence was 8.8%. LCMV infections are common and associated with acute neurological disease in Iraq.
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11
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Jarva H, Lappalainen M, Luomala O, Jokela P, Jääskeläinen AE, Jääskeläinen AJ, Kallio-Kokko H, Kekäläinen E, Mannonen L, Soini H, Suuronen S, Toivonen A, Savolainen-Kopra C, Loginov R, Kurkela S. Laboratory-based surveillance of COVID-19 in the Greater Helsinki area, Finland, February-June 2020. Int J Infect Dis 2021; 104:111-116. [PMID: 33352330 PMCID: PMC7832366 DOI: 10.1016/j.ijid.2020.12.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 12/11/2020] [Accepted: 12/13/2020] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVES The aim was to characterise age- and sex-specific severe acute respiratory syndrome coronavirus disease-2 (SARS-CoV-2) RT-PCR sampling frequency and positivity rate in Greater Helsinki area in Finland during February-June 2020. We also describe the laboratory capacity building for these diagnostics. METHODS Laboratory registry data for altogether 80,791 specimens from 70,517 individuals was analysed. The data included the date of sampling, sex, age and the SARS-CoV-2 RT-PCR test result on specimens collected between 1 February and 15 June 2020. RESULTS Altogether, 4057/80,791 (5.0%) of the specimens were positive and 3915/70,517 (5.6%) of the individuals were found positive. In all, 37% of specimens were from male and 67% from female subjects. While the number of positive cases was similar in male and female subjects, the positivity rate was significantly higher in male subjects: 7.5% of male and 4.4% of female subjects tested positive. The highest incidence/100,000 was observed in those aged ≥80 years. The proportion of young adults in positive cases increased in late May 2020. Large dips in testing frequency were observed during every weekend and also during public holidays. CONCLUSIONS Our data suggest that men pursue SARS-CoV-2 testing less frequently than women. Consequently, a subset of coronavirus disease-2019 infections in men may have gone undetected. People sought testing less frequently on weekends and public holidays, and this may also lead to missing of positive cases. The proportion of young adults in positive cases increased towards the end of the study period, which may suggest their returning back to social behaviour with an increased risk of infection.
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Affiliation(s)
- H Jarva
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland; Translational Immunology Research Program and Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland.
| | - M Lappalainen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - O Luomala
- Finnish Institute for Health and Welfare (THL), Helsinki, Finland
| | - P Jokela
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - A E Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - A J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - H Kallio-Kokko
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - E Kekäläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland; Translational Immunology Research Program and Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | - L Mannonen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - H Soini
- Finnish Institute for Health and Welfare (THL), Helsinki, Finland
| | - S Suuronen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - A Toivonen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | | | - R Loginov
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - S Kurkela
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
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12
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Venturi G, Aberle SW, Avšič-Županc T, Barzon L, Batejat C, Burdino E, Carletti F, Charrel R, Christova I, Connell J, Corman VM, Emmanouil M, Jääskeläinen AJ, Kurolt I, Lustig Y, Martinez MJ, Koopmans M, Nagy O, Nguyen T, Papa A, Pérez-Ruiz M, Pfeffer M, Protic J, Reimerink J, Rossini G, Sánchez-Seco Fariñas MP, Schmidt-Chanasit J, Söderholm S, Sudre B, Van Esbroeck M, Reusken CB. Specialist laboratory networks as preparedness and response tool - the Emerging Viral Diseases-Expert Laboratory Network and the Chikungunya outbreak, Thailand, 2019. ACTA ACUST UNITED AC 2020; 25. [PMID: 32265004 PMCID: PMC7140599 DOI: 10.2807/1560-7917.es.2020.25.13.1900438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We illustrate the potential for specialist laboratory networks to be used as preparedness and response tool through rapid collection and sharing of data. Here, the Emerging Viral Diseases-Expert Laboratory Network (EVD-LabNet) and a laboratory assessment of chikungunya virus (CHIKV) in returning European travellers related to an ongoing outbreak in Thailand was used for this purpose. EVD-LabNet rapidly collected data on laboratory requests, diagnosed CHIKV imported cases and sequences generated, and shared among its members and with the European Centre for Disease Prevention and Control. Data across the network showed an increase in CHIKV imported cases during 1 October 2018–30 April 2019 vs the same period in 2018 (172 vs 50), particularly an increase in cases known to be related to travel to Thailand (72 vs 1). Moreover, EVD-LabNet showed that strains were imported from Thailand that cluster with strains of the ECSA-IOL E1 A226 variant emerging in Pakistan in 2016 and involved in the 2017 outbreaks in Italy. CHIKV diagnostic requests increased by 23.6% between the two periods. The impact of using EVD-LabNet or similar networks as preparedness and response tool could be improved by standardisation of the collection, quality and mining of data in routine laboratory management systems.
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Affiliation(s)
- Giulietta Venturi
- Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Stephan W Aberle
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Tatjana Avšič-Županc
- Institute of Microbiology and Immunology, Faculty of Medicine, Ljubljana, Slovenia
| | - Luisa Barzon
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Christoph Batejat
- Laboratory for Urgent Response to Biological Threats (CIBU), Institut Pasteur, Paris, France
| | - Elisa Burdino
- Laboratory of Microbiology and Virology, Amedeo di Savoia Hospital, Turin, Italy
| | - Fabrizio Carletti
- National Institute for Infectious Diseases 'Lazzaro Spallanzani' IRCCS, Rome, Italy
| | - Rémi Charrel
- Unité des Virus Emergents (UVE: Aix Marseille Univ, IRD 190, INSERM 1207, IRBA, IHU Méditerranée Infection), Marseille, France
| | - Iva Christova
- National Reference Vector-borne pathogens Laboratory, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - Jeff Connell
- National Virus Reference Laboratory, University College Dublin, Ireland
| | - Victor Max Corman
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Virology, Berlin, Germany.,Department of Virology, Labor Berlin, Charité-Vivantes GmbH, Berlin, Germany
| | - Mary Emmanouil
- Diagnostic Services Laboratory, Public Health Laboratories, Hellenic Pasteur Institute, Athens, Greece
| | - Anne J Jääskeläinen
- Virology and Immunology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Ivan Kurolt
- Research unit, University Hospital for Infectious Diseases 'Dr. Fran Mihaljević', Zagreb, Croatia
| | - Yaniv Lustig
- Central Virology Laboratory, Ministry of Health, Chaim Sheba Medical Center, Tel-Hashomer, Israel
| | - Miguel J Martinez
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Marion Koopmans
- Department of Viroscience, Erasmus Medical Centre, Rotterdam, the Netherlands
| | - Orsolya Nagy
- Department of Virology, National Public Health Center, Budapest, Hungary
| | - Trung Nguyen
- Département de Microbiologie, Laboratoire national de santé, Luxemburg
| | - Anna Papa
- Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Mercedes Pérez-Ruiz
- Servicio de Microbiología, Hospital Universitario Virgen de las Nieves, Instituto de Investigación Biosanitaria, Granada, Spain
| | - Martin Pfeffer
- Institute of Animal Hygiene and Veterinary Public Health, Leipzig, Germany
| | - Jelena Protic
- National Reference Laboratory for ARBO viruses and haemorrhagic fever, Belgrade, Serbia
| | - Johan Reimerink
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Giada Rossini
- Regional Reference Centre for Microbiological Emergencies (CRREM), Unit of Clinical Microbiology, St Orsola Malpighi Hospital, Bologna, Italy
| | | | - Jonas Schmidt-Chanasit
- WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Sandra Söderholm
- Department of Microbiology, The Public Health Agency of Sweden, Solna, Sweden
| | - Bertrand Sudre
- European Centre for Disease Prevention and Control, Solna, Sweden
| | - Marjan Van Esbroeck
- Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Chantal B Reusken
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.,Department of Viroscience, Erasmus Medical Centre, Rotterdam, the Netherlands
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- The members of the CHIKV-Working Group are listed at the end of the article
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13
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Kantele A, Lääveri T, Kareinen L, Pakkanen SH, Blomgren K, Mero S, Patjas A, Virtanen J, Uusitalo R, Lappalainen M, Järvinen A, Kurkela S, Jääskeläinen AJ, Vapalahti O, Sironen T. SARS-CoV-2 infections among healthcare workers at Helsinki University Hospital, Finland, spring 2020: Serosurvey, symptoms and risk factors. Travel Med Infect Dis 2020; 39:101949. [PMID: 33321195 PMCID: PMC7833655 DOI: 10.1016/j.tmaid.2020.101949] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/29/2020] [Accepted: 12/06/2020] [Indexed: 12/12/2022]
Abstract
Background Exposure, risks and immunity of healthcare workers (HCWs), a vital resource during the SARS-CoV-2 pandemic, warrant special attention. Methods HCWs at Helsinki University Hospital, Finland, filled in questionnaires and provided serum samples for SARS-CoV-2-specific antibody screening by Euroimmun IgG assay in March–April 2020. Positive/equivocal findings were confirmed by Abbott and microneutralization tests. Positivity by two of the three assays or RT-PCR indicated a Covid-19 case (CoV+). Results The rate of CoV(+) was 3.3% (36/1095) and seropositivity 3.0% (33/1095). CoV(+) was associated with contact with a known Covid-19 case, and working on a Covid-19-dedicated ward or one with cases among staff. The rate in the Covid-19-dedicated ICU was negligible. Smoking and age <55 years were associated with decreased risk. CoV(+) was strongly associated with ageusia, anosmia, myalgia, fatigue, fever, and chest pressure. Seropositivity was recorded for 89.3% of those with prior documented RT-PCR-positivity and 2.4% of those RT-PCR-negative. The rate of previously unidentified cases was 0.7% (8/1067) and asymptomatic ones 0% (0/36). Conclusion Undiagnosed and asymptomatic cases among HCWs proved rare. An increased risk was associated with Covid-19-dedicated wards. Particularly high rates were seen for wards with liberal HCW-HCW contacts, highlighting the importance of social distancing also among HCWs.
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Affiliation(s)
- Anu Kantele
- Infectious Diseases, Inflammation Center, Helsinki University Hospital and University of Helsinki, Finland; Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Finland; Meilahti Vaccine Research Center, MeVac, Helsinki University Hospital and University of Helsinki, Finland.
| | - Tinja Lääveri
- Infectious Diseases, Inflammation Center, Helsinki University Hospital and University of Helsinki, Finland
| | - Lauri Kareinen
- Department of Virology, Medicum, Faculty of Medicine, University of Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 University of Helsinki, Finland
| | - Sari H Pakkanen
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Finland; Meilahti Vaccine Research Center, MeVac, Helsinki University Hospital and University of Helsinki, Finland
| | - Karin Blomgren
- Meilahti Vaccine Research Center, MeVac, Helsinki University Hospital and University of Helsinki, Finland
| | - Sointu Mero
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Finland
| | - Anu Patjas
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Finland; Meilahti Vaccine Research Center, MeVac, Helsinki University Hospital and University of Helsinki, Finland
| | - Jenni Virtanen
- Department of Virology, Medicum, Faculty of Medicine, University of Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 University of Helsinki, Finland
| | - Ruut Uusitalo
- Department of Virology, Medicum, Faculty of Medicine, University of Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 University of Helsinki, Finland; Department of Geosciences and Geography, Faculty of Science, University of Helsinki, Finland
| | - Maija Lappalainen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - Asko Järvinen
- Infectious Diseases, Inflammation Center, Helsinki University Hospital and University of Helsinki, Finland
| | - Satu Kurkela
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - Anne J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - Olli Vapalahti
- Department of Virology, Medicum, Faculty of Medicine, University of Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 University of Helsinki, Finland; HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - Tarja Sironen
- Department of Virology, Medicum, Faculty of Medicine, University of Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 University of Helsinki, Finland
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14
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Plyusnin I, Kant R, Jääskeläinen AJ, Sironen T, Holm L, Vapalahti O, Smura T. Novel NGS pipeline for virus discovery from a wide spectrum of hosts and sample types. Virus Evol 2020; 6:veaa091. [PMID: 33408878 PMCID: PMC7772471 DOI: 10.1093/ve/veaa091] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The study of the microbiome data holds great potential for elucidating the biological and metabolic functioning of living organisms and their role in the environment. Metagenomic analyses have shown that humans, along with for example, domestic animals, wildlife and arthropods, are colonized by an immense community of viruses. The current Coronavirus pandemic (COVID-19) heightens the need to rapidly detect previously unknown viruses in an unbiased way. The increasing availability of metagenomic data in this era of next-generation sequencing (NGS), along with increasingly affordable sequencing technologies, highlight the need for reliable and comprehensive methods to manage such data. In this article, we present a novel bioinformatics pipeline called LAZYPIPE for identifying both previously known and novel viruses in host associated or environmental samples and give examples of virus discovery based on it. LAZYPIPE is a Unix-based pipeline for automated assembling and taxonomic profiling of NGS libraries implemented as a collection of C++, Perl, and R scripts.
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Affiliation(s)
- Ilya Plyusnin
- Institute of Biotechnology, University of Helsinki, Helsinki 00014, Finland
| | - Ravi Kant
- Department of Veterinary Bioscience, University of Helsinki, Helsinki 00014, Finland
| | - Anne J Jääskeläinen
- Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital, Helsinki 00014, Finland
| | - Tarja Sironen
- Department of Veterinary Bioscience, University of Helsinki, Helsinki 00014, Finland
| | - Liisa Holm
- Institute of Biotechnology, University of Helsinki, Helsinki 00014, Finland
| | - Olli Vapalahti
- Department of Veterinary Bioscience, University of Helsinki, Helsinki 00014, Finland
| | - Teemu Smura
- Department of Virology, University of Helsinki, Helsinki 00014, Finland
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15
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Alburkat H, Jääskeläinen AJ, Barakat AM, Hasony HJ, Sironen T, Al-hello H, Smura T, Vapalahti O. Lymphocytic Choriomeningitis Virus Infections and Seroprevalence, Southern Iraq. Emerg Infect Dis 2020. [DOI: 10.3201/eid2612/201792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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16
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Zakham F, Jääskeläinen AJ, Castrén J, Sormunen JJ, Uusitalo R, Smura T, Von Troil G, Kuivanen S, Sironen T, Vapalahti O. Molecular detection and phylogenetic analysis of Borrelia miyamotoi strains from ticks collected in the capital region of Finland. Ticks Tick Borne Dis 2020; 12:101608. [PMID: 33249364 DOI: 10.1016/j.ttbdis.2020.101608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/31/2020] [Accepted: 11/03/2020] [Indexed: 11/16/2022]
Abstract
Borrelia miyamotoi is an emerging pathogen that shares high similarity with relapsing fever Borrelia, but has an atypical clinical presentation. Within the framework of tick-borne disease surveillance in Finland, human serum samples suspected for tick-borne encephalitis (n=974) and questing ticks (n=739) were collected from the capital region in Finland to determine the prevalence of B. miyamotoi. All tested human samples were negative and 5 (0.68 %) Ixodes ricinus ticks were positive for B. miyamotoi. Partial sequencing of the flagellin (flaB) gene of 3 positive samples and 27 B. miyamotoi-positive tick samples obtained from previous studies across Finland were amplified, sequenced, and included in the phylogenetic analysis. The phylogenetic tree revealed that most B. miyamotoi strains isolated from ticks in Finland share high similarity with other European strains, including strains related to human infection. Possible disease transmission may occur during exposure to tick bites. A single strain collected from an I. persulcatus tick in Pajujärvi grouped with an outlier of B. miyamotoi strains isolated from Russia and Far East Asian countries. Further studies should investigate the pathogen's role in human infection in Finland. Another important finding is the occurrence of I. persulcatus ticks (8%) collected by crowdsourcing from the coastal southern part of Finland. This suggests a regular introduction and a possible wide expansion of this tick species in the country. This could be associated with transmission of new pathogens.
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Affiliation(s)
- Fathiah Zakham
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
| | - Anne J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | | | | | - Ruut Uusitalo
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Department of Geosciences and Geography, Faculty of Science, University of Helsinki, Helsinki, Finland
| | - Teemu Smura
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Gabriel Von Troil
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Archipelago Doctors Ltd, Helsinki Area, Finland
| | - Suvi Kuivanen
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Tarja Sironen
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Olli Vapalahti
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland; HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
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17
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Abstract
The mosquito-borne chikungunya virus (CHIKV) causes an acute febrile illness with rash, joint and muscle pain.A realtime RT-PCR assay for CHIKV detecting non-structural protein (nsP2; CHIKV nsP2-RT-qPCR) was set up. All the serodiagnosed CHIKV cases detected during 2009-2019 in Finland were screened with the assay, followed by isolations attempts and sequencing using Sanger and next generation sequencing (NGS). To validate the assay external and in-house quality control samples were used and all were correctly identified. Specificity of the assay was 100%. Assay was sensitive to detect CHIKV RNA in dilution of 10-8.During years 2009-2019 34 patients were diagnosed for acute CHIKV infection. Twelve out of 34 cases were positive by CHIKV nsP2-RT-qPCR.Two CHIKV isolations succeeded from two individuals infected originally in Thailand, 2019. From 12 CHIKV nsP2-RT-qPCR positive samples, five (42%) CHIKVs were successfully sequenced. In this study, CHIKVs from year 2019 clustered with CHIKV ECSA-lineage forming sub-cluster with strains from ones detected in Bangladesh 2017, and the ones from Jamaica (2014) within Asian lineage showing highest similarity to strains detected in Caribbean outbreak 2013-15. Majority of the CHIKV infections detected in Finland originates from Asia and virus lineages reflect the global circulation of the pathogen.
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Affiliation(s)
- A J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Helsinki, Finland
| | - L Kareinen
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - T Smura
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - H Kallio-Kokko
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Helsinki, Finland
| | - O Vapalahti
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Helsinki, Finland.,Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
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18
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Jääskeläinen AJ, Kuivanen S, Kekäläinen E, Ahava MJ, Loginov R, Kallio-Kokko H, Vapalahti O, Jarva H, Kurkela S, Lappalainen M. Performance of six SARS-CoV-2 immunoassays in comparison with microneutralisation. J Clin Virol 2020; 129:104512. [PMID: 32563180 PMCID: PMC7295517 DOI: 10.1016/j.jcv.2020.104512] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 06/14/2020] [Indexed: 01/16/2023]
Abstract
There is an urgent need for reliable high-throughput serological assays for the management of the ongoing COVID-19 pandemic. Preferably, the performance of serological tests for a novel virus should be determined with clinical specimens against a gold standard, i.e. virus neutralisation. We compared the performance of six commercial immunoassays for the detection of SARS-COV-2 IgG, IgA and IgM antibodies, including four automated assays [Abbott SARS-COV-2 IgG (CE marked), Diasorin Liaison® SARS-COV-2 S1/S2 IgG (research use only, RUO), and Euroimmun SARS-COV-2 IgG and IgA (CE marked)], and two rapid lateral flow (immunocromatographic) tests [Acro Biotech 2019-nCoV IgG/IgM (CE marked) and Xiamen Biotime Biotechnology SARS-COV-2 IgG/IgM (CE marked)] with a microneutralisation test (MNT). Two specimen panels from serum samples sent to Helsinki University Hospital Laboratory (HUSLAB) were compiled: the patient panel (N=70) included sera from PCR confirmed COVID-19 patients, and the negative panel (N=81) included sera sent for screening of autoimmune diseases and respiratory virus antibodies in 2018 and 2019. The MNT was carried out for all COVID-19 samples (70 serum samples, 62 individuals) and for 53 samples from the negative panel. Forty-one out of 62 COVID-19 patients showed neutralising antibodies.The specificity and sensitivity values of the commercial tests against MNT, respectively, were as follows: 95.1 %/80.5 % (Abbott Architect SARS-CoV-2 IgG), 94.9 %/43.8 % (Diasorin Liaison SARS-CoV-2 IgG; RUO), 68.3 %/87.8 % (Euroimmun SARS-CoV-2 IgA), 86.6 %/70.7 % (Euroimmun SARS-CoV-2 IgG), 74.4 %/56.1 % (Acro 2019-nCoV IgG), 69.5 %/46.3 % (Acro 2019-nCoV IgM), 97.5 %/71.9 % (Xiamen Biotime SARS-CoV-2 IgG), and 88.8 %/81.3 % (Xiamen Biotime SARS-CoV-2 IgM). This study shows variable performance values. Laboratories should carefully consider their testing process, such as a two-tier approach, in order to optimize the overall performance of SARS- CoV-2 serodiagnostics.
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Affiliation(s)
- A J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland.
| | - S Kuivanen
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - E Kekäläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland; Translational Immunology Research Program and Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | - M J Ahava
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - R Loginov
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - H Kallio-Kokko
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - O Vapalahti
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland; Department of Virology, University of Helsinki, Helsinki, Finland; Depts of Virology and Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - H Jarva
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland; Translational Immunology Research Program and Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | - S Kurkela
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
| | - M Lappalainen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland
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19
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Jääskeläinen AJ, Sironen T, Kaloinen M, Kakkola L, Julkunen I, Hewson R, Weidmann MW, Mirazimi A, Watson R, Vapalahti O. Comparison of Zaire ebolavirus realtime RT-PCRs targeting the nucleoprotein gene. J Virol Methods 2020; 284:113941. [PMID: 32707049 DOI: 10.1016/j.jviromet.2020.113941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 07/15/2020] [Accepted: 07/17/2020] [Indexed: 10/23/2022]
Abstract
In last five years, the Africa has faced two outbreaks of Zaire ebolavirus. These outbreaks have been the largest so far, and latest outbreak is still ongoing and affecting the Democratic Republic of the Congo. We tested in parallel three different Zaire ebolavirus (EBOV) realtime RT-PCRs targeting the nucleoprotein gene (EBOV NP-RT-qPCRs) described by Trombley et al. (2010); Huang et al. (2012) and Weidmann et al. (2004). These assays are used regularly in diagnostic laboratories. The limit of detection (LOD), intra-assay repeatability using different matrixes, sensitivity and specificity were determined. In addition, the primers and probes were aligned with the sequences available in ongoing and past outbreaks in order to check the mismatches. The specificity of all three EBOV NP-RT-qPCRs were excellent (100 %), and LODs were under or 10 copies per PCR reaction. Intra-assay repeatability was good in all assays, however the Ct-values were bit higher using the EDTA-blood based matrix. All of the primers and probes in EBOV NP-RT-qPCR assays have one or more mismatches in the probes and primers when the 2267 Zaire EBOV NP sequences, including strains Ituri from DRC outbreak (year 2018), was aligned. The EBOV strain of Bikoro (year 2018) circulating in DRC was 100 % match in Trombley and Weidmann assay, but had one mismatch in Huang assay.
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Affiliation(s)
- Anne J Jääskeläinen
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland.
| | - Tarja Sironen
- University of Helsinki, Department of Virology, Helsinki, Finland; Faculty of Veterinary Medicine, Department of Veterinary Biosciences, University of Helsinki, Finland
| | - Minttu Kaloinen
- University of Helsinki, Department of Virology, Helsinki, Finland
| | - Laura Kakkola
- University of Turku, Institute of Biomedicine, Turku, Finland
| | - Ilkka Julkunen
- University of Turku, Institute of Biomedicine, Turku, Finland
| | - Roger Hewson
- National Infection Service, Public Health England, Porton Down, Salisbury, United Kingdom
| | - Manfred W Weidmann
- University of Stirling, Institute of Aquaculture, Stirling, United Kingdom
| | - Ali Mirazimi
- Public Health Agency of Sweden, Department of Microbiology, Solna, Sweden; Karolinska University Hospital and Karolinska Institute, Department of Laboratory Medicine (LABMED), Stockholm, Sweden; National Veterinary Institute, Uppsala, Sweden
| | - Robert Watson
- National Infection Service, Public Health England, Porton Down, Salisbury, United Kingdom
| | - Olli Vapalahti
- HUS Diagnostic Center, HUSLAB, Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Finland; Faculty of Veterinary Medicine, Department of Veterinary Biosciences, University of Helsinki, Finland
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20
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Kuivanen S, Levanov L, Kareinen L, Sironen T, Jääskeläinen AJ, Plyusnin I, Zakham F, Emmerich P, Schmidt-Chanasit J, Hepojoki J, Smura T, Vapalahti O. Detection of novel tick-borne pathogen, Alongshan virus, in Ixodes ricinus ticks, south-eastern Finland, 2019. ACTA ACUST UNITED AC 2020; 24. [PMID: 31290392 PMCID: PMC6628756 DOI: 10.2807/1560-7917.es.2019.24.27.1900394] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The newly identified tick-borne Alongshan virus (ALSV), a segmented Jingmen virus group flavivirus, was recently associated with human disease in China. We report the detection of ALSV RNA in Ixodes ricinus ticks in south-eastern Finland. Screening of sera from patients suspected for tick-borne encephalitis for Jingmen tick virus-like virus RNA and antibodies revealed no human cases. The presence of ALSV in common European ticks warrants further investigations on its role as a human pathogen.
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Affiliation(s)
- Suvi Kuivanen
- Authors contributed equally.,Department of Virology, University of Helsinki, Helsinki, Finland
| | - Lev Levanov
- Authors contributed equally.,Department of Virology, University of Helsinki, Helsinki, Finland
| | - Lauri Kareinen
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - Tarja Sironen
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland.,Department of Virology, University of Helsinki, Helsinki, Finland
| | - Anne J Jääskeläinen
- Division of Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Ilya Plyusnin
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Fathiah Zakham
- Department of Virology, University of Helsinki, Helsinki, Finland
| | - Petra Emmerich
- University of Rostock, Rostock, Germany.,Departments of Virology and Arbovirology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Jonas Schmidt-Chanasit
- German Centre for Infection Research (DZIF), Hamburg, Germany.,Departments of Virology and Arbovirology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Jussi Hepojoki
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.,Department of Virology, University of Helsinki, Helsinki, Finland
| | - Teemu Smura
- Authors contributed equally.,Division of Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Department of Virology, University of Helsinki, Helsinki, Finland
| | - Olli Vapalahti
- Authors contributed equally.,Division of Clinical Microbiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland.,Department of Virology, University of Helsinki, Helsinki, Finland
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21
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Smura T, Blomqvist S, Kolehmainen P, Schuffenecker I, Lina B, Böttcher S, Diedrich S, Löve A, Brytting M, Hauzenberger E, Dudman S, Ivanova O, Lukasev A, Fischer TK, Midgley S, Susi P, Savolainen-Kopra C, Lappalainen M, Jääskeläinen AJ. Aseptic meningitis outbreak associated with echovirus 4 in Northern Europe in 2013-2014. J Clin Virol 2020; 129:104535. [PMID: 32652478 DOI: 10.1016/j.jcv.2020.104535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 06/29/2020] [Accepted: 07/05/2020] [Indexed: 01/23/2023]
Abstract
Picornaviruses (family Picornaviridae) are small, nonenveloped, positive-sense, single-stranded RNA viruses. The members of this family are currently classified into 47 genera and 110 species. Of picornaviruses, entero- and parechoviruses are associated with aseptic meningitis. They are transmitted via fecal-oral and respiratory routes, and occasionally, these viruses may cause a brief viremia and gain access to central nervous system (CNS). During the diagnostic screening of entero- and parechovirus types in Finland in year 2013-14, we detected a cluster of echovirus 4 (E4) infections in young adults and adolescents. As E4 is infrequently detected in Finland, we contacted several Northern and Central European laboratories that conduct routine surveillance for enteroviruses and, for those who have had E4 cases, we send a query for E4 sequences and data. Here we report CNS infections caused by E4 in Finland, Sweden, Norway, Denmark, Iceland and Germany in 2013 and 2014, and show that the E4 detected in these countries form a single lineage. In contrast, E4 strains circulating in these countries preceding the year 2013, and those circulating elsewhere in Europe during 2013-2014, formed several independent clusters.
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Affiliation(s)
- Teemu Smura
- University of Helsinki and Helsinki University Hospital, Virology and Immunology, Helsinki, Finland
| | - Soile Blomqvist
- National Institute for Health and Welfare (THL), Department of Health Security, Helsinki, Finland
| | | | - Isabelle Schuffenecker
- Institut des Agents infectieux des HCL, CNR des enterovirus, Hôpital de la Croix-Rousse & Université de Lyon, CIRI INSERM U1111, UCBL, Lyon, France
| | - Bruno Lina
- Institut des Agents infectieux des HCL, CNR des enterovirus, Hôpital de la Croix-Rousse & Université de Lyon, CIRI INSERM U1111, UCBL, Lyon, France
| | | | | | - Arthur Löve
- Landspitali, National University Hospital, Reykjavik, Iceland
| | - Mia Brytting
- Folkhälsomyndigheten, Public Health Agency of Sweden, Solna, Sweden
| | | | | | - Olga Ivanova
- Chumakov Federal Scientific Center for Research and Development, Moscow, Russia; Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Alexander Lukasev
- Chumakov Federal Scientific Center for Research and Development, Moscow, Russia; Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | | | | | - Petri Susi
- University of Turku, Institute of Biomedicine, Turku, Finland
| | - Carita Savolainen-Kopra
- National Institute for Health and Welfare (THL), Department of Health Security, Helsinki, Finland
| | - Maija Lappalainen
- University of Helsinki and Helsinki University Hospital, Virology and Immunology, Helsinki, Finland
| | - Anne J Jääskeläinen
- University of Helsinki and Helsinki University Hospital, Virology and Immunology, Helsinki, Finland.
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22
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Fevola C, Rossi C, Rosso F, Girardi M, Rosà R, Manica M, Delucchi L, Rocchini D, Garzon-Lopez CX, Arnoldi D, Bianchi A, Buzan E, Charbonnel N, Collini M, Ďureje L, Ecke F, Ferrari N, Fischer S, Gillingham EL, Hörnfeldt B, Kazimírová M, Konečný A, Maas M, Magnusson M, Miller A, Niemimaa J, Nordström Å, Obiegala A, Olsson G, Pedrini P, Piálek J, Reusken CB, Rizzolli F, Romeo C, Silaghi C, Sironen T, Stanko M, Tagliapietra V, Ulrich RG, Vapalahti O, Voutilainen L, Wauters L, Rizzoli A, Vaheri A, Jääskeläinen AJ, Henttonen H, Hauffe HC. Geographical Distribution of Ljungan Virus in Small Mammals in Europe. Vector Borne Zoonotic Dis 2020; 20:692-702. [PMID: 32487013 DOI: 10.1089/vbz.2019.2542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Ljungan virus (LV), which belongs to the Parechovirus genus in the Picornaviridae family, was first isolated from bank voles (Myodes glareolus) in Sweden in 1998 and proposed as a zoonotic agent. To improve knowledge of the host association and geographical distribution of LV, tissues from 1685 animals belonging to multiple rodent and insectivore species from 12 European countries were screened for LV-RNA using reverse transcriptase (RT)-PCR. In addition, we investigated how the prevalence of LV-RNA in bank voles is associated with various intrinsic and extrinsic factors. We show that LV is widespread geographically, having been detected in at least one host species in nine European countries. Twelve out of 21 species screened were LV-RNA PCR positive, including, for the first time, the red vole (Myodes rutilus) and the root or tundra vole (Alexandromys formerly Microtus oeconomus), as well as in insectivores, including the bicolored white-toothed shrew (Crocidura leucodon) and the Valais shrew (Sorex antinorii). Results indicated that bank voles are the main rodent host for this virus (overall RT-PCR prevalence: 15.2%). Linear modeling of intrinsic and extrinsic factors that could impact LV prevalence showed a concave-down relationship between body mass and LV occurrence, so that subadults had the highest LV positivity, but LV in older animals was less prevalent. Also, LV prevalence was higher in autumn and lower in spring, and the amount of precipitation recorded during the 6 months preceding the trapping date was negatively correlated with the presence of the virus. Phylogenetic analysis on the 185 base pair species-specific sequence of the 5' untranslated region identified high genetic diversity (46.5%) between 80 haplotypes, although no geographical or host-specific patterns of diversity were detected.
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Affiliation(s)
- Cristina Fevola
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy.,Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Chiara Rossi
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Fausta Rosso
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Matteo Girardi
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Roberto Rosà
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy.,Center for Agriculture Food Environment-C3A, University of Trento and Fondazione E. Mach, San Michele all'Adige, Italy
| | - Mattia Manica
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Luca Delucchi
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Duccio Rocchini
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy.,Center for Agriculture Food Environment-C3A, University of Trento and Fondazione E. Mach, San Michele all'Adige, Italy.,Department of Cellular, Computational and Integrative Biology-CIBIO, University of Trento, Povo, Italy
| | - Carol X Garzon-Lopez
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy.,Ecology and Vegetation Physiology Group (EcoFiv), Universidad de los Andes, Bogotá, Colombia
| | - Daniele Arnoldi
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Alessandro Bianchi
- Istituto Zooprofilattico Sperimentale della Lombardia e Dell'Emilia Romagna "Bruno Ubertini," Brescia, Italy
| | - Elena Buzan
- Department of Biodiversity, Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Koper, Slovenia
| | - Nathalie Charbonnel
- CBGP, INRAE, CIRAD, IRD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Margherita Collini
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy.,Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - L'udovít Ďureje
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Studenec, Czech Republic
| | - Frauke Ecke
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Nicola Ferrari
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Stefan Fischer
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases, Greifswald-Insel Riems, Germany
| | - Emma L Gillingham
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy.,School of Biosciences, Cardiff University, Cardiff, United Kingdom.,Department of Medical Entomology and Zoonoses Ecology, Emergency Response Department, Public Health England, Salisbury, United Kingdom.,Department of Climate Change and Health, Public Health England, London, United Kingdom
| | - Birger Hörnfeldt
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Mária Kazimírová
- Slovak Academy of Sciences (SAS), Institute of Zoology, Bratislava, Slovakia
| | - Adam Konečný
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy.,Department of Botany and Zoology, Masaryk University, Brno, Czech Republic
| | - Miriam Maas
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Magnus Magnusson
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Andrea Miller
- Department of Biomedical Sciences and Veterinary Public Health, Section for Parasitology, Swedish University of Agricultural Sciences, Uppsala, Sweden.,Department for Terrestrial Ecology, Norwegian Institute for Nature Research, Trondheim, Norway
| | - Jukka Niemimaa
- Natural Resources Institute Finland (LUKE), Helsinki, Finland
| | - Åke Nordström
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Anna Obiegala
- Comparative Tropical Medicine and Parasitology, Ludwig-Maximilians-Universität, Munich, Germany.,Institute of Animal Hygiene and Veterinary Public Health, University of Leipzig, Leipzig, Germany
| | - Gert Olsson
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Paolo Pedrini
- Sezione Zoologia dei Vertebrati, MUSE-Museo delle Scienze, Trento, Italy
| | - Jaroslav Piálek
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Studenec, Czech Republic
| | - Chantal B Reusken
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands.,Department of Viroscience, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Franco Rizzolli
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Claudia Romeo
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Cornelia Silaghi
- Comparative Tropical Medicine and Parasitology, Ludwig-Maximilians-Universität, Munich, Germany.,Institute of Infectology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Tarja Sironen
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Michal Stanko
- Slovak Academy of Sciences (SAS), Institute of Zoology, Bratislava, Slovakia.,Slovak Academy of Sciences (SAS), Institute of Parasitology, Košice, Slovakia
| | - Valentina Tagliapietra
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Rainer G Ulrich
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Novel and Emerging Infectious Diseases, Greifswald-Insel Riems, Germany
| | - Olli Vapalahti
- Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | | | - Lucas Wauters
- Department of Theoretical and Applied Sciences, Università degli Studi dell'Insubria, Varese, Italy
| | - Annapaola Rizzoli
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Antti Vaheri
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Anne J Jääskeläinen
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | | | - Heidi C Hauffe
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
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23
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Jääskeläinen AJ, Kekäläinen E, Kallio-Kokko H, Mannonen L, Kortela E, Vapalahti O, Kurkela S, Lappalainen M. Evaluation of commercial and automated SARS-CoV-2 IgG and IgA ELISAs using coronavirus disease (COVID-19) patient samples. Euro Surveill 2020; 25:2000603. [PMID: 32400364 PMCID: PMC7219034 DOI: 10.2807/1560-7917.es.2020.25.18.2000603] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 05/07/2020] [Indexed: 11/30/2022] Open
Abstract
Antibody-screening methods to detect severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) need to be validated. We evaluated SARS-CoV-2 IgG and IgA ELISAs in conjunction with the EUROLabworkstation (Euroimmun, Lübeck, Germany). Overall specificities were 91.9% and 73.0% for IgG and IgA ELISAs, respectively. Of 39 coronavirus disease patients, 13 were IgG and IgA positive and 11 IgA alone at sampling. IgGs and IgAs were respectively detected at a median of 12 and 11 days after symptom onset.
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Affiliation(s)
- Anne J Jääskeläinen
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Eliisa Kekäläinen
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Hannimari Kallio-Kokko
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Laura Mannonen
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Elisa Kortela
- Infectious diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Olli Vapalahti
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Satu Kurkela
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- These authors contributed equally to the work
| | - Maija Lappalainen
- Department of Virology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- These authors contributed equally to the work
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24
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Masika MM, Korhonen EM, Smura T, Uusitalo R, Vapalahti K, Mwaengo D, Jääskeläinen AJ, Anzala O, Vapalahti O, Huhtamo E. Detection of dengue virus type 2 of Indian origin in acute febrile patients in rural Kenya. PLoS Negl Trop Dis 2020; 14:e0008099. [PMID: 32126086 PMCID: PMC7069648 DOI: 10.1371/journal.pntd.0008099] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 03/13/2020] [Accepted: 01/29/2020] [Indexed: 01/25/2023] Open
Abstract
Dengue virus (DENV) has caused recent outbreaks in coastal cities of Kenya, but the epidemiological situation in other areas of Kenya is largely unknown. We investigated the role of DENV infection as a cause of acute febrile disease in non-epidemic settings in rural and urban study areas in Kenya. Altogether, 560 patients were sampled in 2016–2017 in rural Taita–Taveta County (n = 327) and urban slums of Kibera, Nairobi (n = 233). The samples were studied for DENV IgM, IgG, NS1 antigen and flaviviral RNA. IgG seroprevalence was found to be higher in Taita–Taveta (14%) than in Nairobi (3%). Five Taita–Taveta patients were positive for flaviviral RNA, all identified as DENV-2, cosmopolitan genotype. Local transmission in Taita–Taveta was suspected in a patient without travel history. The sequence analysis suggested that DENV-2 strains circulating in coastal and southern Kenya likely arose from a single introduction from India. The molecular clock analyses dated the most recent ancestor to the Kenyan strains a year before the large 2013 outbreak in Mombasa. After this, the virus has been detected in Kilifi in 2014, from our patients in Taita–Taveta in 2016, and in an outbreak in Malindi in 2017. The results highlight that silent transmission occurs between epidemics and also affects rural areas. More information is needed to understand the local epidemiological characteristics and future risks of dengue in Kenya. Dengue virus (DENV) is an emerging mosquito-borne global health threat in the tropics and subtropics. The majority of the world’s population live in areas at risk of dengue that can cause a wide variety of symptoms from febrile illness to haemorrhagic fever. Information of DENV in Africa is limited and fragmented. In Kenya, dengue is a recognized disease in coastal cities that have experienced recent outbreaks. We investigated the role of DENV infection as a cause of acute febrile disease in non-epidemic settings in rural and urban study areas in Kenya. We found DENV-2 in five febrile patients from rural Taita–Taveta, where no dengue has been reported before. Genetic analysis of the virus suggests it to be most likely of Indian origin. This Indian origin DENV-2 was detected in the Mombasa outbreak in 2013, in Kilifi in 2014, in Taita–Taveta in 2016 (our study samples) and again in the Malindi outbreak in 2017. The results suggest that dengue is unrecognized in rural Kenya and more studies are needed for local risk assessment. Our findings of virus transmission between epidemics contribute to better understanding of the epidemiological situation and origins of DENV in Kenya.
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Affiliation(s)
- Moses Muia Masika
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
- KAVI Institute of Clinical Research, University of Nairobi, Nairobi, Kenya
| | - Essi M. Korhonen
- Department of Virology, Medicum, University of Helsinki, Helsinki, Finland
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
- * E-mail:
| | - Teemu Smura
- Department of Virology, Medicum, University of Helsinki, Helsinki, Finland
| | - Ruut Uusitalo
- Department of Virology, Medicum, University of Helsinki, Helsinki, Finland
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
- Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland
| | - Katariina Vapalahti
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Dufton Mwaengo
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya
| | - Anne J. Jääskeläinen
- Department of Virology, Medicum, University of Helsinki, Helsinki, Finland
- Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Omu Anzala
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
- KAVI Institute of Clinical Research, University of Nairobi, Nairobi, Kenya
| | - Olli Vapalahti
- Department of Virology, Medicum, University of Helsinki, Helsinki, Finland
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
- Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Eili Huhtamo
- Department of Virology, Medicum, University of Helsinki, Helsinki, Finland
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
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25
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Forbes KM, Webala PW, Jääskeläinen AJ, Abdurahman S, Ogola J, Masika MM, Kivistö I, Alburkat H, Plyusnin I, Levanov L, Korhonen EM, Huhtamo E, Mwaengo D, Smura T, Mirazimi A, Anzala O, Vapalahti O, Sironen T. Bombali Virus in Mops condylurus Bat, Kenya. Emerg Infect Dis 2019; 25:955-957. [PMID: 31002301 PMCID: PMC6478230 DOI: 10.3201/eid2505.181666] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Bombali virus (genus Ebolavirus) was identified in organs and excreta of an Angolan free-tailed bat (Mops condylurus) in Kenya. Complete genome analysis revealed 98% nucleotide sequence similarity to the prototype virus from Sierra Leone. No Ebola virus–specific RNA or antibodies were detected from febrile humans in the area who reported contact with bats.
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26
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Jääskeläinen AJ, Sironen T, Diagne CT, Diagne MM, Faye M, Faye O, Faye O, Hewson R, Mölsä M, Weidmann MW, Watson R, Sall AA, Vapalahti O. Development, validation and clinical evaluation of a broad-range pan-filovirus RT-qPCR. J Clin Virol 2019; 114:26-31. [PMID: 30904708 DOI: 10.1016/j.jcv.2019.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 03/11/2019] [Accepted: 03/15/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND During the five decades since their discovery, filoviruses of four species have caused human hemorrhagic fever outbreaks: Marburg (MARV) marburgvirus, and Zaire (EBOV), Sudan (SUDV) and Bundybugyo (BDBV) ebolaviruses. The largest, devastating EBOV epidemic in West Africa in 2014-16, has been followed by outbreaks of MARV in Uganda, 2017, and EBOV in Democratic Republic of Congo, 2018, emphasizing the need to develop preparedness to diagnose all filoviruses. OBJECTIVES The aim of this study was to optimize a new filovirus RT-qPCR to detect all filoviruses, define its limits of detection (LOD) and perform a field evaluation with outbreak samples. STUDY DESIGN A pan-filovirus RT-qPCR targeting the L gene was developed and evaluated within the EbolaMoDRAD (Ebola virus: modern approaches for developing bedside rapid diagnostics) project. Specificity and sensitivity were determined and the effect of inactivation and PCR reagents (liquid and lyophilized format) were tested. RESULTS The LODs for the lyophilized pan-filovirus L-RT-qPCR assay were 9.4 copies per PCR reaction for EBOV, 9.9 for MARV, 1151 for SUDV, 65 for BDBV and 289 for Taï Forest virus. The test was set at the Pasteur Institute, Dakar, Senegal, and 83 Ebola patient samples, with viral load ranging from 5 to 5 million copies of EBOV per reaction, were screened. The results for the patient samples were in 100% concordance with the reference EBOV-specific assay. DISCUSSION Overall, the assay showed good sensitivity and specificity, covered all filoviruses known to be human pathogens, performed well both in lyophilized and liquid-phase formats and with EBOV outbreak clinical samples.
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Affiliation(s)
- Anne J Jääskeläinen
- Helsinki University and Helsinki University Hospital (HUSLAB), Department of Virology, Finland.
| | - Tarja Sironen
- University of Helsinki, Department of Virology, Helsinki, Finland; Faculty of Veterinary Medicine, Department of Veterinary Biosciences, University of Helsinki, Finland
| | | | | | - Martin Faye
- Institut Pasteur de Dakar, Pôle de virologie, Dakar, Senegal
| | - Oumar Faye
- Institut Pasteur de Dakar, Pôle de virologie, Dakar, Senegal
| | - Ousmane Faye
- Institut Pasteur de Dakar, Pôle de virologie, Dakar, Senegal
| | - Roger Hewson
- National Infection Service, Public Health England, Porton Down, Salisbury, United Kingdom
| | - Markos Mölsä
- National Institute for Health and Welfare, Biothreat unit, Centre for Military Medicine, Helsinki, Finland Centres for Biothreat Preparedness and for Military Medicine, Finnish Defence Forces, Finland
| | - Manfred W Weidmann
- University of Stirling, Institute of Aquaculture, Stirling, United Kingdom
| | - Robert Watson
- National Infection Service, Public Health England, Porton Down, Salisbury, United Kingdom
| | | | - Olli Vapalahti
- Helsinki University and Helsinki University Hospital (HUSLAB), Department of Virology, Finland; University of Helsinki, Department of Virology, Helsinki, Finland; Faculty of Veterinary Medicine, Department of Veterinary Biosciences, University of Helsinki, Finland
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Kuivanen S, Smura T, Rantanen K, Kämppi L, Kantonen J, Kero M, Jääskeläinen A, Jääskeläinen AJ, Sane J, Myllykangas L, Paetau A, Vapalahti O. Fatal Tick-Borne Encephalitis Virus Infections Caused by Siberian and European Subtypes, Finland, 2015. Emerg Infect Dis 2019; 24:946-948. [PMID: 29664395 PMCID: PMC5938788 DOI: 10.3201/eid2405.171986] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
In most locations except for Russia, tick-borne encephalitis is mainly caused by the European virus subtype. In 2015, fatal infections caused by European and Siberian tick-borne encephalitis virus subtypes in the same Ixodes ricinus tick focus in Finland raised concern over further spread of the Siberian subtype among widespread tick species.
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Jääskeläinen AJ, Korhonen EM, Huhtamo E, Lappalainen M, Vapalahti O, Kallio-Kokko H. Validation of serological and molecular methods for diagnosis of zika virus infections. J Virol Methods 2019; 263:68-74. [DOI: 10.1016/j.jviromet.2018.10.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/12/2018] [Accepted: 10/13/2018] [Indexed: 12/17/2022]
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Fevola C, Forbes KM, Mäkelä S, Putkuri N, Hauffe HC, Kallio-Kokko H, Mustonen J, Jääskeläinen AJ, Vaheri A. Lymphocytic choriomeningitis, Ljungan and orthopoxvirus seroconversions in patients hospitalized due to acute Puumala hantavirus infection. J Clin Virol 2016; 84:48-52. [PMID: 27721109 DOI: 10.1016/j.jcv.2016.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 09/24/2016] [Accepted: 10/03/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND The emergence and re-emergence of zoonotic and vector-borne diseases are increasing in Europe. Prominent rodent-borne zoonotic viruses include Puumala hantavirus (PUUV; the causative agent of nephropathia epidemica, NE), lymphocytic choriomeningitis virus (LCMV), and orthopoxviruses (OPV). In addition, Ljungan virus (LV) is considered a potentially zoonotic virus. OBJECTIVE The aim of this study was to compare clinical picture between acute PUUV patients with and without additional rodent-borne viral infections, to investigate if concurrent infections influence disease severity. STUDY DESIGN We evaluated seroprevalence of and seroconversions to LCMV, LV and OPV in 116 patients hospitalized for NE. Clinical and laboratory variables were closely monitored during hospital care. RESULTS A total of five LCMV, 15 LV, and one OPV seroconversions occurred. NE patients with LCMV seroconversions were younger, and had lower plasma creatinine concentrations and platelet counts than patients without LCMV seroconversions. No differences occurred in clinical or laboratory findings between patients with and without seroconversions to LV and OPV. We report, for the first time, LCMV seroprevalence in Finland, with 8.5% of NE patients seropositive for this virus. Seroprevalences for LV and OPV were 47.8% and 32.4%, respectively. CONCLUSION Cases with LCMV seroconversions were statistically younger, had milder acute kidney injury and more severe thrombocytopenia than patients without LCMV. However, the low number of seroconversion cases precludes firm conclusions. Concurrent LV or OPV infections do not appear to influence clinical picture for NE patients.
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Affiliation(s)
- Cristina Fevola
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, TN, Italy.
| | - Kristian M Forbes
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
| | - Satu Mäkelä
- School of Medicine, University of Tampere, Tampere, Finland; Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
| | - Niina Putkuri
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
| | - Heidi C Hauffe
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, TN, Italy.
| | - Hannimari Kallio-Kokko
- Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital, HUSLAB, Helsinki, Finland.
| | - Jukka Mustonen
- School of Medicine, University of Tampere, Tampere, Finland; Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
| | - Anne J Jääskeläinen
- Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital, HUSLAB, Helsinki, Finland.
| | - Antti Vaheri
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
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Driggers RW, Ho CY, Korhonen EM, Kuivanen S, Jääskeläinen AJ, Smura T, Rosenberg A, Hill DA, DeBiasi RL, Vezina G, Timofeev J, Rodriguez FJ, Levanov L, Razak J, Iyengar P, Hennenfent A, Kennedy R, Lanciotti R, du Plessis A, Vapalahti O. Zika Virus Infection with Prolonged Maternal Viremia and Fetal Brain Abnormalities. N Engl J Med 2016; 374:2142-51. [PMID: 27028667 DOI: 10.1056/nejmoa1601824] [Citation(s) in RCA: 600] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The current outbreak of Zika virus (ZIKV) infection has been associated with an apparent increased risk of congenital microcephaly. We describe a case of a pregnant woman and her fetus infected with ZIKV during the 11th gestational week. The fetal head circumference decreased from the 47th percentile to the 24th percentile between 16 and 20 weeks of gestation. ZIKV RNA was identified in maternal serum at 16 and 21 weeks of gestation. At 19 and 20 weeks of gestation, substantial brain abnormalities were detected on ultrasonography and magnetic resonance imaging (MRI) without the presence of microcephaly or intracranial calcifications. On postmortem analysis of the fetal brain, diffuse cerebral cortical thinning, high ZIKV RNA loads, and viral particles were detected, and ZIKV was subsequently isolated.
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Affiliation(s)
- Rita W Driggers
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Cheng-Ying Ho
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Essi M Korhonen
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Suvi Kuivanen
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Anne J Jääskeläinen
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Teemu Smura
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Avi Rosenberg
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - D Ashley Hill
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Roberta L DeBiasi
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Gilbert Vezina
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Julia Timofeev
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Fausto J Rodriguez
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Lev Levanov
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Jennifer Razak
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Preetha Iyengar
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Andrew Hennenfent
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Richard Kennedy
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Robert Lanciotti
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Adre du Plessis
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
| | - Olli Vapalahti
- From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.)
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Jääskeläinen AJ, Kallio-Kokko H, Ozkul A, Bodur H, Korukruoglu G, Mousavi M, Pranav P, Vaheri A, Mirazimi A, Vapalahti O. Development and evaluation of a real-time RT-qPCR for detection of Crimean-Congo hemorrhagic fever virus representing different genotypes. Vector Borne Zoonotic Dis 2015; 14:870-2. [PMID: 25514124 DOI: 10.1089/vbz.2014.1577] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Crimean-Congo hemorrhagic fever (CCHF) is a zoonotic disease caused by a nairovirus belonging to family Bunyaviridae. The CCHF virus (CCHFV) can be transmitted to humans by Hyalomma ticks as well as by direct contact with infected body fluids or tissues from viremic livestock or humans. Our aim was to set up a fast RT-qPCR for detection of the different CCHFV genotypes in clinical samples, including an inactivation step to make the sample handling possible in lower biosafety levels (BSL) than BSL-4. This method was evaluated against commercial reference assays and international External Quality Assessment (EQA) samples. The analytical limit of detection for the developed CCHFV-S RT-qPCR was 11 CCHFV genomes per reaction. After exclusion of four dubious samples, we studied 38 CCHFV-positive samples (using reference tests) of which 38 were found positive by CCHFV-S RT-qPCR, suggesting a sensitivity of 100%. CCHFV-S RT q-PCR detected all eight different CCHFV strains representing five different CCHFV genotypes. In conclusion, the CCHFV-S RT-qPCR described in this study was evaluated using various sources of CCHFV samples and shown to be an accurate tool to detect human CCHFV infection caused by different genotypes of the virus.
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Affiliation(s)
- Anne J Jääskeläinen
- 1 HUSLAB, Department of Virology and Immunology, Helsinki University Central Hospital , Helsinki, Finland
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Jääskeläinen AJ, Moilanen K, Aaltonen K, Putkuri N, Sironen T, Kallio-Kokko H, Vapalahti O. Development and evaluation of a real-time EBOV-L-RT-qPCR for detection of Zaire ebolavirus. J Clin Virol 2015; 67:56-8. [PMID: 25959160 DOI: 10.1016/j.jcv.2015.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/30/2015] [Accepted: 04/05/2015] [Indexed: 01/31/2023]
Abstract
An RT-qPCR targeting EBOV-L including the preceding RNA extraction protocol were set up and evaluated.
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Affiliation(s)
- Anne J Jääskeläinen
- Helsinki University Hospital, Department of Virology and Immunology, Finland; University of Helsinki, Department of Virology, Finland.
| | | | | | - Niina Putkuri
- University of Helsinki, Department of Virology, Finland
| | - Tarja Sironen
- University of Helsinki, Department of Virology, Finland
| | - Hannimari Kallio-Kokko
- Helsinki University Hospital, Department of Virology and Immunology, Finland; University of Helsinki, Department of Virology, Finland
| | - Olli Vapalahti
- Helsinki University Hospital, Department of Virology and Immunology, Finland; University of Helsinki, Department of Virology, Finland; Faculty of Veterinary Medicine, Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
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33
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Jääskeläinen AJ, Huhtamo E, Kivioja R, Domingo C, Vene S, Kallio-Kokko H, Niedrig M, Tienari PJ, Vapalahti O. Suspected YF-AND after yellow fever vaccination in Finland. J Clin Virol 2014; 61:444-7. [PMID: 25223921 DOI: 10.1016/j.jcv.2014.08.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 07/23/2014] [Accepted: 08/26/2014] [Indexed: 11/17/2022]
Abstract
Yellow fever (YF) vaccine is considered safe but vaccine-associated complications have also been encountered. We report neurological symptoms after YF-vaccination in a previously healthy Finnish male. Other concomitant infections or causes for the symptoms could not be identified.
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Affiliation(s)
- Anne J Jääskeläinen
- HUSLAB, Department of Virology and Immunology, Helsinki University Central Hospital, Finland; Haartman Institute, Department of Virology, University of Helsinki, Finland.
| | - Eili Huhtamo
- Haartman Institute, Department of Virology, University of Helsinki, Finland
| | - Reetta Kivioja
- Department of Neurology, Helsinki University Central Hospital, and Molecular Neurology, Research Programs Unit, Biomedicum, University of Helsinki, Helsinki, Finland
| | - Cristina Domingo
- Centre for Biological Threats and Special Pathogens, Highly Pathogenic Viruses, Robert Koch Institute, Berlin, Germany
| | - Sirkka Vene
- Public Health Agency of Sweden, Solna, Sweden
| | - Hannimari Kallio-Kokko
- HUSLAB, Department of Virology and Immunology, Helsinki University Central Hospital, Finland; Haartman Institute, Department of Virology, University of Helsinki, Finland
| | - Matthias Niedrig
- Centre for Biological Threats and Special Pathogens, Highly Pathogenic Viruses, Robert Koch Institute, Berlin, Germany
| | - Pentti J Tienari
- Department of Neurology, Helsinki University Central Hospital, and Molecular Neurology, Research Programs Unit, Biomedicum, University of Helsinki, Helsinki, Finland
| | - Olli Vapalahti
- HUSLAB, Department of Virology and Immunology, Helsinki University Central Hospital, Finland; Haartman Institute, Department of Virology, University of Helsinki, Finland; Faculty of Veterinary Medicine, Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
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Vaheri A, Strandin T, Jääskeläinen AJ, Vapalahti O, Jarva H, Lokki ML, Antonen J, Leppänen I, Mäkelä S, Meri S, Mustonen J. Pathophysiology of a severe case of Puumala hantavirus infection successfully treated with bradykinin receptor antagonist icatibant. Antiviral Res 2014; 111:23-5. [PMID: 25194993 DOI: 10.1016/j.antiviral.2014.08.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 08/11/2014] [Accepted: 08/14/2014] [Indexed: 01/18/2023]
Abstract
We recently described a patient with very severe Puumala hantavirus infection manifested by capillary leakage syndrome and shock. He was successfully treated with the bradykinin receptor antagonist, icatibant (Antonen et al., 2013). Here we report analysis of the pathophysiology which indicated pronounced complement activation, prolonged leukocytosis, extensive fibrinolysis, circulating histones, and defects in liver function. The patient had an uncommon HLA-phenotype, which may have contributed to the severe course of the disease.
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Affiliation(s)
- Antti Vaheri
- Haartman Institute, University of Helsinki, Finland; Department of Virology and Immunology, Helsinki University Central Hospital Laboratory, Finland.
| | | | - Anne J Jääskeläinen
- Haartman Institute, University of Helsinki, Finland; Department of Virology and Immunology, Helsinki University Central Hospital Laboratory, Finland
| | - Olli Vapalahti
- Haartman Institute, University of Helsinki, Finland; Department of Virology and Immunology, Helsinki University Central Hospital Laboratory, Finland; Department of Veterinary Biosciences, University of Helsinki, Finland
| | - Hanna Jarva
- Haartman Institute, University of Helsinki, Finland; Immunobiology Research Program, University of Helsinki, Finland
| | | | | | | | - Satu Mäkelä
- Tampere University Hospital, Finland; School of Medicine, University of Tampere, Finland
| | - Seppo Meri
- Haartman Institute, University of Helsinki, Finland; Immunobiology Research Program, University of Helsinki, Finland
| | - Jukka Mustonen
- Tampere University Hospital, Finland; School of Medicine, University of Tampere, Finland
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Jääskeläinen AJ, Kolehmainen P, Kallio-Kokko H, Nieminen T, Koskiniemi M, Tauriainen S, Lappalainen M. First two cases of neonatal human parechovirus 4 infection with manifestation of suspected sepsis, Finland. J Clin Virol 2013; 58:328-30. [DOI: 10.1016/j.jcv.2013.06.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 05/14/2013] [Accepted: 06/02/2013] [Indexed: 10/26/2022]
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Jääskeläinen AJ, Kolehmainen P, Voutilainen L, Hauffe HC, Kallio-Kokko H, Lappalainen M, Tolf C, Lindberg AM, Henttonen H, Vaheri A, Tauriainen S, Vapalahti O. Evidence of Ljungan virus specific antibodies in humans and rodents, Finland. J Med Virol 2013; 85:2001-8. [PMID: 23852812 DOI: 10.1002/jmv.23681] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2013] [Indexed: 12/19/2022]
Abstract
Ljungan virus (LV, genus Parechovirus, family Picornaviridae) is considered currently to be a rodent-borne virus. Despite suggested human disease associations, its zoonotic potential remains unclear. To date, LV antibody prevalence in both humans and rodents has not been studied. In this study, two different LV immunofluorescence assays (LV IFAs) were developed with LV genotypes 1 (LV strain 87-012G) and 2 (LV strain 145SLG), and cross-neutralization and -reaction studies were carried out with LV strain 145SLG. Finally, a panel of 37 Finnish sera was screened for anti-LV antibodies using two different LV IFAs (LV 145SLG and LV 87-012G) and a neutralization (NT) assay (LV 145SLG), and 50 samples from Myodes glareolus by LV IFA (LV 145SLG). The LV seroprevalence study showed 38% and 18% positivity in humans and M. glareolus, respectively. LV IFAs and NT assays were compared, and the results were in good agreement. The data are the first evidence of humans and rodents coming into contact with LV in Finland. Additional studies are required in order to acquire a better understanding of the prevalence, epidemiological patterns and possible disease association of LV infections.
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Affiliation(s)
- Anne J Jääskeläinen
- HUSLAB, Department of Virology and Immunology, Helsinki University Central Hospital, Helsinki, Finland.
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Jääskeläinen AJ, Piiparinen H, Lappalainen M, Vaheri A. Improved multiplex-PCR and microarray for herpesvirus detection from CSF. J Clin Virol 2008; 42:172-5. [DOI: 10.1016/j.jcv.2008.01.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2007] [Revised: 01/04/2008] [Accepted: 01/10/2008] [Indexed: 10/22/2022]
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Kanerva M, Jääskeläinen AJ, Suvela M, Piiparinen H, Vaheri A, Pitkäranta A. Human herpesvirus-6 and -7 DNA in cerebrospinal fluid of facial palsy patients. Acta Otolaryngol 2008; 128:460-4. [PMID: 18368583 DOI: 10.1080/00016480701774990] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
CONCLUSIONS Finding human herpesvirus (HHV)-7 and dual HHV-6A and -6B DNA in cerebrospinal fluid (CSF) of two facial palsy (FP) patients is intriguing but does not allow etiologic conclusions as such. HHV-6 or -7 DNA was revealed in 10% of the CSF samples tested from 70 immunocompetent adolescents and adults; a highly unusual result. How these findings are associated with the diseases they accompany remains to be defined. OBJECTIVE To determine whether herpes simplex virus (HSV)-1 and -2, varicella-zoster virus (VZV), HHV-6A, -6B, and -7, Epstein-Barr virus (EBV), and cytomegalovirus (CMV) DNA could be found in CSF of FP patients or controls. SUBJECTS AND METHODS In all, 33 peripheral FP patients (26 idiopathic, 5 with herpesvirus infection, 1 puerperal, 1 Melkersson-Rosenthal syndrome) (34 CSF samples) and 36 controls (16 nonidiopathic FP, 7 hearing loss, 6 vertigo, 5 headache, 2 other) previously tested for HSV-1, VZV, and HHV-6 DNA by polymerase chain reaction (PCR) were tested with highly sensitive multiplex-PCR and an oligonucleotide microarray method. RESULTS One FP patient had HHV-7 DNA and another had HHV-6A and -6B DNA simultaneously. In the control group, one HHV-7, one HHV-6A, and three HHV-6B DNA-positive specimens were found.
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Virtanen JO, Färkkilä M, Multanen J, Uotila L, Jääskeläinen AJ, Vaheri A, Koskiniemi M. Evidence for human herpesvirus 6 variant A antibodies in multiple sclerosis: diagnostic and therapeutic implications. J Neurovirol 2007; 13:347-52. [PMID: 17849318 DOI: 10.1080/13550280701381332] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Human herpesvirus 6 (HHV-6) has been linked to the pathogenesis of multiple sclerosis (MS). HHV-6 antibodies in serum and cerebrospinal fluid (CSF) of 27 patients with clinically definite MS (CDMS) were compared with age- and sex-matched controls, including various other neurological diseases and symptoms (OND). In addition, we studied a series of 19 patients with clinically or laboratory supported possible MS (CPMS). Seroprevalence to HHV-6A was 100% in patients with MS, both in CDMS and CPMS, compared to 69.2% in patients with OND (P = .001 and .007). The mean immunoglobulin G (IgG) titers were significantly higher in patients with CDMS and CPMS than in controls (P = .005 and .00002). The proportion of acute primary infections without CSF involvement was similar in all groups; however, primary infections with intrathecal HHV-6 antibody production were more frequent in MS. In CSF, HHV-6A-specific antibodies were present in three (11.5%) and four (21.1%) patients with CDMS and CPMS, compared to none with OND (P = .06 and .01, respectively). Serological suggestions to HHV-6A infection occurred more often in both CDMS and CPMS than in OND (14.8% versus 21.1% versus 3.8%). We conclude that a subpopulation of MS patients, and even a greater proportion of possible MS subjects, has serological evidence of HHV-6A infection, which might provide new markers for diagnosis and therapy.
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Affiliation(s)
- J O Virtanen
- Department of Virology, Haartman Institute, University of Helsinki, Helsinki, Finland
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Jääskeläinen AJ, Piiparinen H, Lappalainen M, Koskiniemi M, Vaheri A. Multiplex-PCR and oligonucleotide microarray for detection of eight different herpesviruses from clinical specimens. J Clin Virol 2006; 37:83-90. [PMID: 16872894 DOI: 10.1016/j.jcv.2006.05.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2005] [Revised: 05/30/2006] [Accepted: 05/31/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND Human herpesviruses cause clinically important diseases, e.g. infections of the central nervous system. New diagnostic tools are required for rapid and reliable detection of these viruses. OBJECTIVES A microarray-based method was designed for detection of eight human herpesviruses in cerebrospinal fluid (CSF), whole blood, plasma, serum and proficiency-testing specimens. STUDY DESIGN Herpes simplex type 1 and 2, varicella-zoster, cytomegalo-, Epstein-Barr and human herpes viruses 6A, 6B and 7 were amplified from clinical specimens by two multiplex-PCRs and transcribed to single-stranded RNAs which were hybridized to oligonucleotides on microarray. The results were compared to those from conventional PCR. In total, 227 specimens were tested including 23 CSF, 10 whole blood, 73 plasma, 10 proficiency-testing samples and 111 negative control samples. RESULTS Concordant results were obtained in 214/227 (94%). Microarray detected 10 possible double and one triple infection. Negative control samples (70 serum, 30 CSF and 11 proficiency-testing samples) were all negative. CONCLUSIONS Microarray is suitable for detection of multiple herpesviruses in clinical samples.
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Affiliation(s)
- Anne J Jääskeläinen
- Department of Virology, Haartman Institute, PO Box 21, University of Helsinki, FIN-00014 Helsinki, Finland.
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Jääskeläinen AJ, Maunula L. Applicability of microarray technique for the detection of noro- and astroviruses. J Virol Methods 2006; 136:210-6. [PMID: 16781784 DOI: 10.1016/j.jviromet.2006.05.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2006] [Revised: 05/11/2006] [Accepted: 05/16/2006] [Indexed: 10/24/2022]
Abstract
Noroviruses and astroviruses are widespread viral agents causing gastroenteritis. Noroviruses are actually a diverse group of viruses. A new microarray-based detection method is presented for both noro- and astroviruses. This method enables simultaneous identification of genogroups and types of noro- and astroviruses. For pre-amplification, the monoplex- and multiplex-RT-PCR assays were applied to test sensitivity. The 202 specimens were used to determine the specificity, precision, and accuracy of the microarray. Stool samples representing 13 of norovirus GI and GII genotypes were assayed. The microarray detected all but one genotype. In a panel of 74 stool samples, 45 tested positive for norovirus by microarray, against 35 by a conventional PCR-method. In addition, microarray detected some double infections. In a panel of archival samples, astroviruses of genotype 4 frequently emerged in Finland from 1977 to 1997. This study demonstrates that microarray is useful for simultaneous monitoring of several viruses and their subtypes. Microarray provides a convenient tool for the detection of RNA viruses for which frequent changes in the panel of detection primers may be required.
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Affiliation(s)
- Anne J Jääskeläinen
- Department of Virology, Haartman Institute, University of Helsinki, FIN-00014 Helsinki, Finland.
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Peiponen KE, Jääskeläinen AJ, Vartiainen EM, Räty J, Tapper U, Richard O, Kauppinen EI, Lumme K. Estimation of the wavelength-dependent effective refractive index of spherical plastic pigments in a liquid matrix. Appl Opt 2001; 40:5482-5486. [PMID: 18364832 DOI: 10.1364/ao.40.005482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Refractive-index data are important for the prediction of light scattering from spherical pigments. Reflectance from a slurry that contains plastic pigments was studied with the aid of a reflectometer. The effective refractive index of spherical plastic pigments in a slurry was determined by use of reflectance data and a phase-retrieval procedure based on the maximum-entropy method. This method provides a simple way to estimate the effective refractive index of pigments in a liquid matrix.
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Abstract
The refractive index of milk samples was measured with a reflectometer. Fresnel's formula for intensity reflectance and the concept of critical angle were applied to measured data. Milk samples were also measured with surface plasmon resonance sensor for refractive index assessment. The experiments were carried with commercial milk that had fat volume concentrations of 0.004, 1.53, and 3.55%. We observed that simultaneously quantitative information about the refractive index and absorption of milk, as a function of fat concentration, could be obtained with both devices.
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Ahonen J, Inberg MV, Jääskeläinen AJ, Havia T, Aho AJ, Scheinin TM. Effect of oxygen ventilation in mesenteric arterial occlusion in the dog. Scand J Gastroenterol 1972; 7:9-16. [PMID: 5010513 DOI: 10.3109/00365527209180731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Jääskeläinen AJ, Ahonen J, Havia T, Inberg MV, Scheinin TM. Experimental studies on arterial and venous mesenteric occlusion. I. Enzyme histochemical alterations. Ann Clin Res 1969; 1:266-76. [PMID: 4244449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Jääskeläinen AJ. A method for the estimation of age in the identification of mass casualties. J Forensic Sci 1968; 13:528-31. [PMID: 4317477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Raekallio J, Jääskeläinen AJ, Mäkinen PL. The simple demonstration of calcium oxalate crystals in kidneys of victims of ethylene glycol poisoning. J Forensic Sci 1967; 12:238-40. [PMID: 6034034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Jääskeläinen AJ. Death following ventricular fibrillation during the catheterization of the right heart. Acta Med Leg Soc (Liege) 1966; 19:167-73. [PMID: 5929101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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