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Hodcroft EB, Dyrdak R, Andrés C, Egli A, Reist J, García Martínez de Artola D, Alcoba-Flórez J, Niesters HGM, Antón A, Poelman R, Reynders M, Wollants E, Neher RA, Albert J. Evolution, geographic spreading, and demographic distribution of Enterovirus D68. PLoS Pathog 2022; 18:e1010515. [PMID: 35639811 PMCID: PMC9212145 DOI: 10.1371/journal.ppat.1010515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 06/21/2022] [Accepted: 04/10/2022] [Indexed: 12/26/2022] Open
Abstract
Worldwide outbreaks of enterovirus D68 (EV-D68) in 2014 and 2016 have caused serious respiratory and neurological disease. We collected samples from several European countries during the 2018 outbreak and determined 53 near full-length genome (‘whole genome’) sequences. These sequences were combined with 718 whole genome and 1,987 VP1-gene publicly available sequences. In 2018, circulating strains clustered into multiple subgroups in the B3 and A2 subclades, with different phylogenetic origins. Clusters in subclade B3 emerged from strains circulating primarily in the US and Europe in 2016, though some had deeper roots linking to Asian strains, while clusters in A2 traced back to strains detected in East Asia in 2015-2016. In 2018, all sequences from the USA formed a distinct subgroup, containing only three non-US samples. Alongside the varied origins of seasonal strains, we found that diversification of these variants begins up to 18 months prior to the first diagnostic detection during a EV-D68 season. EV-D68 displays strong signs of continuous antigenic evolution and all 2018 A2 strains had novel patterns in the putative neutralizing epitopes in the BC- and DE-loops. The pattern in the BC-loop of the USA B3 subgroup had not been detected on that continent before. Patients with EV-D68 in subclade A2 were significantly older than patients with a B3 subclade virus. In contrast to other subclades, the age distribution of A2 is distinctly bimodal and was found primarily among children and in the elderly. We hypothesize that EV-D68’s rapid evolution of surface proteins, extensive diversity, and high rate of geographic mixing could be explained by substantial reinfection of adults. Better understanding of evolution and immunity across diverse viral pathogens, including EV-D68 and SARS-CoV-2, is critical to pandemic preparedness in the future. Enterovirus D68 (EV-D68) has caused punctuated, global outbreaks of respiratory illness and neurological disease, including being implicated as the cause of acute flaccid myelitis (AFM). Serology studies and surveillance data suggests almost everyone is infected during early childhood. The majority of sequences collected are from young children, while adults retain high antibody titers against strains that circulated when they were young. However, little is known about how outbreaks are connected and how the virus evolves and spreads around the globe. Despite EV-D68’s apparent reliance on young, naive hosts, EV-D68 antibody binding sites are reportedly evolving under antigenic pressure, and EV-D68 seems to spread rapidly during outbreaks. In this multi-center European collaboration, we confirm that subclade specific age differences are present in those infected. Further, we were able to quantify between- and within-country migration and the ‘hidden’ diversification that indicates unsampled circulation between outbreaks. We conclude that the evolution of EV-D68 may be driven by substantial re-infection of adults, explaining the rapid geographic mixing and continuous antigenic evolution. The presence of largely unsampled circulation prior to outbreaks suggests there are gaps in current surveillance practices which could be addressed by expanding genetic surveillance.
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Affiliation(s)
- Emma B. Hodcroft
- Biozentrum, University of Basel, Basel, Switzerland
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
- Swiss Institute of Bioinformatics, Basel, Switzerland
- * E-mail:
| | - Robert Dyrdak
- Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden
| | - Cristina Andrés
- Respiratory Viruses Unit, Virology Section, Microbiology Department, Vall d’Hebron Hospital Universitari, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Adrian Egli
- Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland
- Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Josiane Reist
- Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland
- Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | | | - Julia Alcoba-Flórez
- Department of Clinical Microbiology, Hospital Universitario Nuestra Señora de Candelaria, Tenerife, Spain
| | - Hubert G. M. Niesters
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology, Division of Clinical Virology, Groningen, The Netherlands
| | - Andrés Antón
- Respiratory Viruses Unit, Virology Section, Microbiology Department, Vall d’Hebron Hospital Universitari, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Randy Poelman
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology, Division of Clinical Virology, Groningen, The Netherlands
| | - Marijke Reynders
- Unit of Molecular Microbiology, Medical Microbiology, Department of Laboratory Medicine, AZ Sint-Jan Brugge AV, Bruges, Belgium
| | - Elke Wollants
- KU Leuven, Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical & Epidemiological Virology, Leuven, Belgium
| | - Richard A. Neher
- Biozentrum, University of Basel, Basel, Switzerland
- Swiss Institute of Bioinformatics, Basel, Switzerland
| | - Jan Albert
- Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden
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Fall A, Kenmoe S, Ebogo-Belobo JT, Mbaga DS, Bowo-Ngandji A, Foe-Essomba JR, Tchatchouang S, Amougou Atsama M, Yéngué JF, Kenfack-Momo R, Feudjio AF, Nka AD, Mbongue Mikangue CA, Taya-Fokou JB, Magoudjou-Pekam JN, Noura EA, Zemnou-Tepap C, Meta-Djomsi D, Maïdadi-Foudi M, Kame-Ngasse GI, Nyebe I, Djukouo LG, Kengne Gounmadje L, Tchami Ngongang D, Oyono MG, Demeni Emoh CP, Tazokong HR, Mahamat G, Kengne-Ndé C, Sadeuh-Mba SA, Dia N, La Rosa G, Ndip L, Njouom R. Global prevalence and case fatality rate of Enterovirus D68 infections, a systematic review and meta-analysis. PLoS Negl Trop Dis 2022; 16:e0010073. [PMID: 35134062 PMCID: PMC8824346 DOI: 10.1371/journal.pntd.0010073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 12/08/2021] [Indexed: 11/23/2022] Open
Abstract
A substantial amount of epidemiological data has been reported on Enterovirus D68 (EV-D68) infections after the 2014 outbreak. Our goal was to map the case fatality rate (CFR) and prevalence of current and past EV-D68 infections. We conducted a systematic review (PROSPERO, CRD42021229255) with published articles on EV-68 infections in PubMed, Embase, Web of Science and Global Index Medicus up to January 2021. We determined prevalences using a model random effect. Of the 4,329 articles retrieved from the databases, 89 studies that met the inclusion criteria were from 39 different countries with apparently healthy individuals and patients with acute respiratory infections, acute flaccid myelitis and asthma-related diseases. The CFR estimate revealed occasional deaths (7/1353) related to EV-D68 infections in patients with severe acute respiratory infections. Analyses showed that the combined prevalence of current and past EV-D68 infections was 4% (95% CI = 3.1–5.0) and 66.3% (95% CI = 40.0–88.2), respectively. The highest prevalences were in hospital outbreaks, developed countries, children under 5, after 2014, and in patients with acute flaccid myelitis and asthma-related diseases. The present study shows sporadic deaths linked to severe respiratory EV-D68 infections. The study also highlights a low prevalence of current EV-D68 infections as opposed to the existence of EV-D68 antibodies in almost all participants of the included studies. These findings therefore highlight the need to implement and/or strengthen continuous surveillance of EV-D68 infections in hospitals and in the community for the anticipation of the response to future epidemics. Enterovirus D68 (EV-D68) infections represent a global public health concern. EV-D68 are detected in apparently healthy subjects and patients with acute respiratory illnesses, acute flaccid myelitis, and asthma-related illnesses. Enterovirus D68 was first described in 1962 and exhibited sporadic circulation until August 2014 when outbreaks of EV-D68 infections were reported in the USA and Canada mainly in children with acute flaccid myelitis and severe acute respiratory disease. We systematically reviewed the literature on EV-D68 infections globally in the present study to determine the case fatality rate and prevalence of current and past infections. Our results show sporadic deaths in patients with severe acute respiratory EV-D68 infections. Our data also show a low prevalence of EV-D68 in current infections unlike the presence of EV-D68 antibodies (past infections) in almost all individuals of all ages. EV-D68 infections were more prevalent in hospital outbreaks, industrialized countries, children < 5 years, and patients with acute flaccid myelitis and asthma-related diseases. These data highlight the need to strengthen the surveillance of EV-D68 infections.
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Affiliation(s)
- Amary Fall
- Virology Department, Institute Pasteur of Dakar, Dakar, Senegal
| | - Sebastien Kenmoe
- Virology Department, Centre Pasteur of Cameroon, Yaounde, Cameroon
- Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon
- * E-mail: (SK); (RN)
| | - Jean Thierry Ebogo-Belobo
- Medical Research Centre, Institute of Medical Research and Medicinal Plants Studies, Yaounde, Cameroon
| | | | - Arnol Bowo-Ngandji
- Department of Microbiology, The University of Yaounde I, Yaounde, Cameroon
| | | | | | - Marie Amougou Atsama
- Centre de Recherche sur les Maladies Émergentes et Re-Emergentes, Institut de Recherches Médicales et d’Etudes des Plantes Médicinales, Yaounde, Cameroon
| | | | - Raoul Kenfack-Momo
- Department of Biochemistry, The University of Yaounde I, Yaounde, Cameroon
| | | | - Alex Durand Nka
- Virology Laboratory, Chantal Biya International Reference Center for Research on HIV/AIDS Prevention and Management, Yaounde, Cameroon
| | | | | | | | - Efietngab Atembeh Noura
- Medical Research Centre, Institute of Medical Research and Medicinal Plants Studies, Yaounde, Cameroon
| | | | - Dowbiss Meta-Djomsi
- Centre de Recherche sur les Maladies Émergentes et Re-Emergentes, Institut de Recherches Médicales et d’Etudes des Plantes Médicinales, Yaounde, Cameroon
| | - Martin Maïdadi-Foudi
- Centre de Recherche sur les Maladies Émergentes et Re-Emergentes, Institut de Recherches Médicales et d’Etudes des Plantes Médicinales, Yaounde, Cameroon
| | - Ginette Irma Kame-Ngasse
- Medical Research Centre, Institute of Medical Research and Medicinal Plants Studies, Yaounde, Cameroon
| | - Inès Nyebe
- Department of Microbiology, The University of Yaounde I, Yaounde, Cameroon
| | | | | | | | - Martin Gael Oyono
- Department of Animals Biology and Physiology, The University of Yaounde I, Yaounde, Cameroon
| | | | | | - Gadji Mahamat
- Department of Microbiology, The University of Yaounde I, Yaounde, Cameroon
| | - Cyprien Kengne-Ndé
- Research Monitoring and Planning Unit, National Aids Control Committee, Douala, Cameroon
| | | | - Ndongo Dia
- Virology Department, Institute Pasteur of Dakar, Dakar, Senegal
| | - Giuseppina La Rosa
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Lucy Ndip
- Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon
| | - Richard Njouom
- Virology Department, Centre Pasteur of Cameroon, Yaounde, Cameroon
- * E-mail: (SK); (RN)
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Abstract
Enterovirus D68 (EV-D68) causes a range of clinical manifestations, including asthma-like illness, severe respiratory disease, and acute flaccid myelitis. EV-D68 has caused worldwide outbreaks since 2014 and is now recognized as a reemerging infection in many countries. EV-D68-specific PCR assays are widely used for the diagnosis of EV-D68 infection; however, assay sensitivity is a concern because of genetic changes in recently circulated EV-D68. To address this, we summarized EV-D68 sequences from previously reported world outbreaks from 2014 through 2020 on GenBank, and found several mutations at the primer and probe binding sites of the existing EV-D68-specific PCR assays. Subsequently, we designed two novel assays corresponding to the recently reported EV-D68 sequences: an EV-D68-specific real-time and seminested PCR. In an analysis of 22 EV-D68 confirmed cases during a recent EV-D68 outbreak in Japan, the new real-time PCR had higher sensitivity than the existing assay (100% versus 45%, P < 0.01) and a lower median CT value (27.8 versus 32.8, P = 0.005). Sensitivity was higher for the new nonnested PCR (91%) than for the existing seminested PCR assay (50%, P < 0.01). The specificity of the new real-time PCR was 100% using samples from non-EV-D68-infected cases (n = 135). In conclusion, our novel assays had higher sensitivity than the existing assay and might lead to more accurate diagnosis of recently circulating EV-D68. To prepare for future EV-D68 outbreaks, EV-D68-specific assays must be continuously monitored and updated.
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Keeren K, Böttcher S, Diedrich S. Enterovirus Surveillance (EVSurv) in Germany. Microorganisms 2021; 9:2005. [PMID: 34683328 PMCID: PMC8538599 DOI: 10.3390/microorganisms9102005] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/17/2021] [Accepted: 09/17/2021] [Indexed: 01/22/2023] Open
Abstract
The major aim of the enterovirus surveillance (EVSurv) in Germany is to prove the absence of poliovirus circulation in the framework of the Global Polio Eradication Program (GPEI). Therefore, a free-of-charge enterovirus diagnostic is offered to all hospitals for patients with symptoms compatible with a polio infection. Within the quality proven laboratory network for enterovirus diagnostic (LaNED), stool and cerebrospinal fluid (CSF) samples from patients with suspected aseptic meningitis/encephalitis or acute flaccid paralysis (AFP) are screened for enterovirus (EV), typing is performed in all EV positive sample to exclude poliovirus infections. Since 2006, ≈200 hospitals from all 16 German federal states have participated annually. On average, 2500 samples (70% stool, 28% CSF) were tested every year. Overall, the majority of the patients studied are children <15 years. During the 15-year period, 53 different EV serotypes were detected. While EV-A71 was most frequently detected in infants, E30 dominated in older children and adults. Polioviruses were not detected. The German enterovirus surveillance allows monitoring of the circulation of clinically relevant serotypes resulting in continuous data about non-polio enterovirus epidemiology.
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Affiliation(s)
- Kathrin Keeren
- Secretary of the National Commission for Polio Eradication in Germany, Robert Koch Institute, 13353 Berlin, Germany;
| | - Sindy Böttcher
- National Reference Centre for Poliomyelitis and Enteroviruses, Robert Koch Institute, 13353 Berlin, Germany;
| | | | - Sabine Diedrich
- National Reference Centre for Poliomyelitis and Enteroviruses, Robert Koch Institute, 13353 Berlin, Germany;
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Duval M, Mirand A, Lesens O, Bay JO, Caillaud D, Gallot D, Lautrette A, Montcouquiol S, Schmidt J, Egron C, Jugie G, Bisseux M, Archimbaud C, Lambert C, Henquell C, Bailly JL. Retrospective Study of the Upsurge of Enterovirus D68 Clade D1 among Adults (2014-2018). Viruses 2021; 13:1607. [PMID: 34452471 PMCID: PMC8402803 DOI: 10.3390/v13081607] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/26/2021] [Accepted: 08/08/2021] [Indexed: 11/17/2022] Open
Abstract
Enterovirus D68 (EV-D68) has emerged as an agent of epidemic respiratory illness and acute flaccid myelitis in the paediatric population but data are lacking in adult patients. We performed a 4.5-year single-centre retrospective study of all patients who tested positive for EV-D68 and analysed full-length EV-D68 genomes of the predominant clades B3 and D1. Between 1 June 2014, and 31 December 2018, 73 of the 11,365 patients investigated for respiratory pathogens tested positive for EV-D68, of whom 20 (27%) were adults (median age 53.7 years [IQR 34.0-65.7]) and 53 (73%) were children (median age 1.9 years [IQR 0.2-4.0]). The proportion of adults increased from 12% in 2014 to 48% in 2018 (p = 0.01). All adults had an underlying comorbidity factor, including chronic lung disease in 12 (60%), diabetes mellitus in six (30%), and chronic heart disease in five (25%). Clade D1 infected a higher proportion of adults than clades B3 and B2 (p = 0.001). Clade D1 was more divergent than clade B3: 5 of 19 amino acid changes in the capsid proteins were located in putative antigenic sites. Adult patients with underlying conditions are more likely to present with severe complications associated with EV-D68, notably the emergent clade D1.
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Affiliation(s)
- Maxime Duval
- Université Clermont Auvergne, LMGE CNRS 6023, UFR de Médecine et des Professions Paramédicales, 63001 Clermont-Ferrand, France; (M.D.); (A.M.); (G.J.); (M.B.); (C.A.); (C.H.)
| | - Audrey Mirand
- Université Clermont Auvergne, LMGE CNRS 6023, UFR de Médecine et des Professions Paramédicales, 63001 Clermont-Ferrand, France; (M.D.); (A.M.); (G.J.); (M.B.); (C.A.); (C.H.)
- CHU Clermont-Ferrand, Centre National de Référence Des Entérovirus et Parechovirus, Laboratoire de Virologie, 63003 Clermont-Ferrand, France
| | - Olivier Lesens
- CHU Clermont-Ferrand, Service Des Maladies Infectieuses et Tropicales, 63003 Clermont-Ferrand, France;
| | - Jacques-Olivier Bay
- CHU Clermont-Ferrand, Service de Thérapie Cellulaire et Hématologie Clinique, 63003 Clermont-Ferrand, France;
| | - Denis Caillaud
- CHU Clermont-Ferrand, Service de Pneumologie, 63003 Clermont-Ferrand, France;
| | - Denis Gallot
- CHU Clermont-Ferrand, Service de Gynécologie-Obstétrique, 63003 Clermont-Ferrand, France;
| | | | - Sylvie Montcouquiol
- CHU Clermont-Ferrand, Centre de Référence et de Compétence Mucoviscidose, 63003 Clermont-Ferrand, France;
| | - Jeannot Schmidt
- CHU Clermont-Ferrand, Service Des Urgences, 63003 Clermont-Ferrand, France;
| | - Carole Egron
- CHU Clermont-Ferrand, Service de Pédiatrie Générale, 63003 Clermont-Ferrand, France;
| | - Gwendoline Jugie
- Université Clermont Auvergne, LMGE CNRS 6023, UFR de Médecine et des Professions Paramédicales, 63001 Clermont-Ferrand, France; (M.D.); (A.M.); (G.J.); (M.B.); (C.A.); (C.H.)
| | - Maxime Bisseux
- Université Clermont Auvergne, LMGE CNRS 6023, UFR de Médecine et des Professions Paramédicales, 63001 Clermont-Ferrand, France; (M.D.); (A.M.); (G.J.); (M.B.); (C.A.); (C.H.)
- CHU Clermont-Ferrand, Centre National de Référence Des Entérovirus et Parechovirus, Laboratoire de Virologie, 63003 Clermont-Ferrand, France
| | - Christine Archimbaud
- Université Clermont Auvergne, LMGE CNRS 6023, UFR de Médecine et des Professions Paramédicales, 63001 Clermont-Ferrand, France; (M.D.); (A.M.); (G.J.); (M.B.); (C.A.); (C.H.)
- CHU Clermont-Ferrand, Centre National de Référence Des Entérovirus et Parechovirus, Laboratoire de Virologie, 63003 Clermont-Ferrand, France
| | - Céline Lambert
- CHU Clermont-Ferrand, Service Biométrie et Médico-Economie—Direction de la Recherche Clinique et Innovation, 63003 Clermont-Ferrand, France;
| | - Cécile Henquell
- Université Clermont Auvergne, LMGE CNRS 6023, UFR de Médecine et des Professions Paramédicales, 63001 Clermont-Ferrand, France; (M.D.); (A.M.); (G.J.); (M.B.); (C.A.); (C.H.)
- CHU Clermont-Ferrand, Centre National de Référence Des Entérovirus et Parechovirus, Laboratoire de Virologie, 63003 Clermont-Ferrand, France
| | - Jean-Luc Bailly
- Université Clermont Auvergne, LMGE CNRS 6023, UFR de Médecine et des Professions Paramédicales, 63001 Clermont-Ferrand, France; (M.D.); (A.M.); (G.J.); (M.B.); (C.A.); (C.H.)
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Enteroviruses in Respiratory Samples from Paediatric Patients of a Tertiary Care Hospital in Germany. Viruses 2021; 13:v13050882. [PMID: 34064852 PMCID: PMC8151397 DOI: 10.3390/v13050882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/16/2022] Open
Abstract
Enteroviruses are associated with various diseases accompanied by rare but severe complications. In recent years, outbreaks of enterovirus D68 and enterovirus A71 associated with severe respiratory infections and neurological complications have been reported worldwide. Since information on molecular epidemiology in respiratory samples is still limited, the genetic diversity of enteroviruses was retrospectively analysed over a 4-year period (2013-2016) in respiratory samples from paediatric patients. Partial viral major capsid protein gene (VP1) sequences were determined for genotyping. Enteroviruses were detected in 255 (6.1%) of 4187 specimens. Phylogenetic analyses of 233 (91.4%) strains revealed 25 different genotypes distributed to Enterovirus A (39.1%), Enterovirus B (34.3%), and Enterovirus D (26.6%). The most frequently detected genotypes were enterovirus D68 (26.6%), coxsackievirus A6 (15.9%), and enterovirus A71 (7.3%). Enterovirus D68 detections were associated with lower respiratory tract infections and increased oxygen demand. Meningitis/encephalitis and other neurological symptoms were related to enterovirus A71, while coxsackievirus A6 was associated with upper respiratory diseases. Prematurity turned out as a potential risk factor for increased oxygen demand during enterovirus infections. The detailed analysis of epidemiological and clinical data contributes to the non-polio enterovirus surveillance in Europe and showed high and rapidly changing genetic diversity of circulating enteroviruses, including different enterovirus D68 variants.
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Ikuse T, Aizawa Y, Yamanaka T, Habuka R, Watanabe K, Otsuka T, Saitoh A. Outbreak of Enterovirus D68 Among Children in Japan-Worldwide Circulation of Enterovirus D68 Clade B3 in 2018. Pediatr Infect Dis J 2021; 40:6-10. [PMID: 32947598 DOI: 10.1097/inf.0000000000002889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Enterovirus D68 (EV-D68) causes asthma-like respiratory infection in children. Several EV-D68 outbreaks have been reported worldwide since the largest outbreak occurred in the United States in 2014. We experienced an accumulation of pediatric cases with asthma-like respiratory illness in Niigata, Japan, in 2018. STUDY DESIGN To determine whether EV-D68 was responsible for the case accumulation, this prospective observational study evaluated children hospitalized in 1 of 8 hospitals with asthma-like respiratory illness in Niigata, Japan, during October and November 2018. Diagnoses were made by EV-D68-specific RT-PCR using nasopharyngeal samples. The clade was identified by sequence analyses, and a phylogenetic tree was created. To evaluate seasonal variation, data from pediatric cases with asthma-like respiratory illness in 2018 were retrospectively analyzed. RESULTS In 2018, 114 children were hospitalized with asthma-like respiratory illness in October and November, and 47 nasopharyngeal samples were collected. EV-D68 was detected in 22/47 (47%) patients during the study period. The phylogenetic tree revealed that all strains belonged to the clade B3 branch, which has been detected worldwide every 2 years since 2014. CONCLUSIONS EV-D68 was the associated pathogen for asthma-like respiratory illness in children in Japan in 2018. Clade B3, the dominant clade in outbreaks worldwide, was responsible for the outbreak. Detection and detailed virologic analysis of EV-D68 is important as part of worldwide surveillance, as it will aid in understanding the epidemiologic characteristics of EV-D68 infection.
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Affiliation(s)
- Tatsuki Ikuse
- From the Department of Pediatrics, Niigata University Graduate School of Medical and Dental Sciences
| | - Yuta Aizawa
- From the Department of Pediatrics, Niigata University Graduate School of Medical and Dental Sciences
| | | | - Rie Habuka
- From the Department of Pediatrics, Niigata University Graduate School of Medical and Dental Sciences
| | - Kanako Watanabe
- Department of Medical Technology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Taketo Otsuka
- From the Department of Pediatrics, Niigata University Graduate School of Medical and Dental Sciences
| | - Akihiko Saitoh
- From the Department of Pediatrics, Niigata University Graduate School of Medical and Dental Sciences
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Graf J, Hartmann CJ, Lehmann HC, Otto C, Adams O, Karenfort M, Schneider C, Ruprecht K, Bosse HM, Diedrich S, Böttcher S, Schnitzler A, Hartung HP, Aktas O, Albrecht P. Meningitis gone viral: description of the echovirus wave 2013 in Germany. BMC Infect Dis 2019; 19:1010. [PMID: 31783807 PMCID: PMC6883514 DOI: 10.1186/s12879-019-4635-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 11/14/2019] [Indexed: 12/28/2022] Open
Abstract
Background Aseptic meningitis epidemics may pose various health care challenges. Methods We describe the German enterovirus meningitis epidemics in the university hospital centers of Düsseldorf, Cologne and Berlin between January 1st and December 31st, 2013 in order to scrutinize clinical differences from other aseptic meningitis cases. Results A total of 72 enterovirus (EV-positive) meningitis cases were detected in our multicenter cohort, corresponding to 5.8% of all EV-positive cases which were voluntarily reported within the National Enterovirus surveillance (EVSurv, based on investigation of patients with suspected aseptic meningitis/encephalitis and/or acute flaccid paralysis) by physicians within this period of time. Among these 72 patients, 38 (52.8%) were enterovirus positive and typed as echovirus (18 pediatric and 20 adult cases, median age 18.5 years; echovirus 18 (1), echovirus 2 (1), echovirus 30 (31), echovirus 33 (1), echovirus 9 (4)). At the same time, 45 aseptic meningitis cases in our cohort were excluded to be due to enteroviral infection (EV-negative). Three EV-negative patients were tested positive for varicella zoster virus (VZV) and 1 EV-negative patient for herpes simplex virus 2. Hospitalization was significantly longer in EV-negative cases. Cerebrospinal fluid analysis did not reveal significant differences between the two groups. After discharge, EV-meningitis resulted in significant burden of sick leave in our pediatric cohort as parents had to care for the children at home. Conclusions Voluntary syndromic surveillance, such as provided by the EVSurv in our study may be a valuable tool for epidemiological research. Our analyses suggest that EV-positive meningitis predominantly affects younger patients and may be associated with a rather benign clinical course, compared to EV-negative cases.
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Affiliation(s)
- Jonas Graf
- Department of Neurology, University Hospital, Medical Faculty Heinrich-Heine University, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - Christian J Hartmann
- Department of Neurology, Center for Movement Disorders and Neuromodulation, Medical Faculty, University Hospital, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany.,Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Helmar C Lehmann
- Department of Neurology, University Hospital of Cologne, Cologne, Germany
| | - Carolin Otto
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Ortwin Adams
- Institute of Virology, University Hospital, Heinrich-Heine University, Düsseldorf, Germany
| | - Michael Karenfort
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Hospital, Heinrich-Heine University, Düsseldorf, Germany
| | | | - Klemens Ruprecht
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Hans Martin Bosse
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Hospital, Heinrich-Heine University, Düsseldorf, Germany
| | - Sabine Diedrich
- FG 15 Nationales Referenzzentrum für Poliomyelitis und Enteroviren, Robert Koch Institut, Berlin, Germany
| | - Sindy Böttcher
- FG 15 Nationales Referenzzentrum für Poliomyelitis und Enteroviren, Robert Koch Institut, Berlin, Germany
| | - Alfons Schnitzler
- Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Hans-Peter Hartung
- Department of Neurology, University Hospital, Medical Faculty Heinrich-Heine University, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - Orhan Aktas
- Department of Neurology, University Hospital, Medical Faculty Heinrich-Heine University, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - Philipp Albrecht
- Department of Neurology, University Hospital, Medical Faculty Heinrich-Heine University, Moorenstraße 5, 40225, Düsseldorf, Germany.
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9
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Detection and Characterization of Human Enteroviruses, Human Cosaviruses, and a New Human Parechovirus Type in Healthy Individuals in Osun State, Nigeria, 2016/2017. Viruses 2019; 11:v11111037. [PMID: 31703317 PMCID: PMC6893832 DOI: 10.3390/v11111037] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/03/2019] [Accepted: 11/04/2019] [Indexed: 12/18/2022] Open
Abstract
Human enteroviruses and human parechoviruses are associated with a broad range of diseases and even severe and fatal conditions. For human cosaviruses, the etiological role is yet unknown. Little is known about the circulation of non-polio enteroviruses, human parechoviruses, and human cosaviruses in Nigeria. A total of 113 stool samples were collected from healthy individuals in Osun State between February 2016 and May 2017. RT-PCR assays targeting the 5' non-coding region (5' -NCR) were used to screen for human enteroviruses, human parechoviruses, and human cosaviruses. For human enteroviruses, species-specific RT-PCR assays targeting the VP1 regions were used for molecular typing. Inoculation was carried out on RD-A, CaCo-2, HEp-2C, and L20B cell lines to compare molecular and virological assays. Ten samples tested positive for enterovirus RNA with 11 strains detected, including CV-A13 (n = 3), E-18 (n = 2), CV-A20 (n = 1), CV-A24 (n = 1), EV-C99 (n = 1), and EV-C116 (n = 2). Three samples tested positive for human parechovirus RNA, and full genome sequencing on two samples allowed assignment to a new Parechovirus A type (HPeV-19). Thirty-three samples tested positive for cosavirus with assignment to species Cosavirus D and Cosavirus A based on the 5'-NCR region. Screening of stool samples collected from healthy individuals in Nigeria in 2016 and 2017 revealed a high diversity of circulating human enteroviruses, human parechoviruses, and human cosaviruses. Molecular assays for genotyping showed substantial benefits compared with those of cell-culture assays.
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Broberg EK, Simone B, Jansa J, The Eu/Eea Member State Contributors. Upsurge in echovirus 30 detections in five EU/EEA countries, April to September, 2018. ACTA ACUST UNITED AC 2019; 23. [PMID: 30401013 PMCID: PMC6337069 DOI: 10.2807/1560-7917.es.2018.23.44.1800537] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An upsurge in Echovirus 30 (E30) infections, associated with meningitis/meningoencephalitis, has been observed in Denmark, Germany, the Netherlands, Norway and Sweden in the period April to September 2018, compared with 2015–2017. In total, 658 E30 infections among 4,537 enterovirus infections were detected in 15 countries between January and September 2018 and affected mainly newborns and 26–45 year-olds. National public health institutes are reminded to remain vigilant and inform clinicians of the ongoing epidemic.
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Affiliation(s)
- Eeva K Broberg
- European Centre for Disease Prevention and Control, Stockholm, Sweden
| | - Benedetto Simone
- European Centre for Disease Prevention and Control, Stockholm, Sweden
| | - Josep Jansa
- European Centre for Disease Prevention and Control, Stockholm, Sweden
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11
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Reina J, Cabrerizo M, del Barrio E. Análisis epidemiológico de las infecciones respiratorias agudas causadas por el enterovirus D68 clado A, subclado A1 en la población adulta. Enferm Infecc Microbiol Clin 2019; 37:487-488. [DOI: 10.1016/j.eimc.2018.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/04/2018] [Accepted: 10/08/2018] [Indexed: 10/27/2022]
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12
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Harvala H, Jasir A, Penttinen P, Pastore Celentano L, Greco D, Broberg E. Surveillance and laboratory detection for non-polio enteroviruses in the European Union/European Economic Area, 2016. ACTA ACUST UNITED AC 2018; 22. [PMID: 29162204 PMCID: PMC5718392 DOI: 10.2807/1560-7917.es.2017.22.45.16-00807] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Enteroviruses (EVs) cause severe outbreaks of respiratory and neurological disease as illustrated by EV-D68 and EV-A71 outbreaks, respectively. We have mapped European laboratory capacity for identification and characterisation of non-polio EVs to improve preparedness to respond to (re)-emerging EVs linked to severe disease. An online questionnaire on non-polio EV surveillance and laboratory detection was submitted to all 30 European Union (EU)/European Economic Area (EEA) countries. Twenty-nine countries responded; 26 conducted laboratory-based non-polio EV surveillance, and 24 included neurological infections in their surveillance. Eleven countries have established specific surveillance for EV-D68 via sentinel influenza surveillance (n = 7), typing EV-positive respiratory samples (n = 10) and/or acute flaccid paralysis surveillance (n = 5). Of 26 countries performing non-polio EV characterisation/typing, 10 further characterised culture-positive EV isolates, whereas the remainder typed PCR-positive but culture-negative samples. Although 19 countries have introduced sequence-based EV typing, seven still rely entirely on virus isolation. Based on 2015 data, six countries typed over 300 specimens mostly by sequencing, whereas 11 countries characterised under 50 EV-positive samples. EV surveillance activity varied between EU/EEA countries, and did not always specifically target patients with neurological and/or respiratory infections. Introduction of sequence-based typing methods is needed throughout the EU/EEA to enhance laboratory capacity for the detection of EVs.
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Affiliation(s)
- Heli Harvala
- European Programme for Public Health Microbiology Training (EUPHEM), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden.,Public Health Agency of Sweden, Stockholm, Sweden
| | - Aftab Jasir
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - Pasi Penttinen
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | | | - Donato Greco
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - Eeva Broberg
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
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13
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Dyda A, Stelzer-Braid S, Adam D, Chughtai AA, MacIntyre CR. The association between acute flaccid myelitis (AFM) and Enterovirus D68 (EV-D68) - what is the evidence for causation? Euro Surveill 2018; 23:17-00310. [PMID: 29386095 PMCID: PMC5792700 DOI: 10.2807/1560-7917.es.2018.23.3.17-00310] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BackgroundEnterovirus D68 (EV-D68) has historically been a sporadic disease, causing occasional small outbreaks of generally mild infection. In recent years, there has been evidence of an increase in EV-D68 infections globally. Large outbreaks of EV-D68, with thousands of cases, occurred in the United States, Canada and Europe in 2014. The outbreaks were associated temporally and geographically with an increase in clusters of acute flaccid myelitis (AFM).
Aims: We aimed to evaluate a causal association between EV-D68 and AFM.
Methods: Using data from the published and grey literature, we applied the Bradford Hill criteria, a set of nine principles applied to examine causality, to evaluate the relationship between EV-D68 and AFM. Based on available evidence, we defined the Bradford Hill Criteria as being not met, or met minimally, partially or fully.
Results: Available evidence applied to EV-D68 and AFM showed that six of the Bradford Hill criteria were fully met and two were partially met. The criterion of biological gradient was minimally met. The incidence of EV-D68 infections is increasing world-wide. Phylogenetic epidemiology showed diversification from the original Fermon and Rhyne strains since the year 2000, with evolution of a genetically distinct outbreak strain, clade B1. Clade B1, but not older strains, is associated with AFM and is neuropathic in animal models.
Conclusion: While more research is needed on dose-response relationship, application of the Bradford Hill criteria supported a causal relationship between EV-D68 and AFM.
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Affiliation(s)
- Amalie Dyda
- School of Public Health and Community Medicine, University of New South Wales (UNSW), Sydney, New South Wales (NSW), Australia
| | - Sacha Stelzer-Braid
- School of Medical Sciences, University of New South Wales (UNSW), Sydney, New South Wales (NSW), Australia,Division of Serology and Virology, South Eastern Area Laboratory Services, Prince of Wales Hospital, Sydney, Australia
| | - Dillon Adam
- School of Public Health and Community Medicine, University of New South Wales (UNSW), Sydney, New South Wales (NSW), Australia
| | - Abrar A Chughtai
- School of Public Health and Community Medicine, University of New South Wales (UNSW), Sydney, New South Wales (NSW), Australia
| | - C Raina MacIntyre
- School of Public Health and Community Medicine, University of New South Wales (UNSW), Sydney, New South Wales (NSW), Australia,College of Public Service and Community Solutions and College of Health Solutions, Arizona State University, Tempe, Arizona, United States
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14
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Kaida A, Iritani N, Yamamoto SP, Kanbayashi D, Hirai Y, Togawa M, Amo K, Kohdera U, Nishigaki T, Shiomi M, Asai S, Kageyama T, Kubo H. Distinct genetic clades of enterovirus D68 detected in 2010, 2013, and 2015 in Osaka City, Japan. PLoS One 2017; 12:e0184335. [PMID: 28902862 PMCID: PMC5597212 DOI: 10.1371/journal.pone.0184335] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 08/22/2017] [Indexed: 12/23/2022] Open
Abstract
The first upsurge of enterovirus D68 (EV-D68), a causative agent of acute respiratory infections (ARIs), in Japan was reported in Osaka City in 2010. In this study, which began in 2010, we surveyed EV-D68 in children with ARIs and analyzed sequences of EV-D68 strains detected. Real-time PCR of 19 respiratory viruses or subtypes of viruses, including enterovirus, was performed on 2,215 specimens from ARI patients (<10 years of age) collected between November 2010 and December 2015 in Osaka City, Japan. EV-D68 was identified in 18 enterovirus-positive specimens (n = 4 in 2013, n = 1 in 2014, and n = 13 in 2015) by analysis of viral protein 1 (VP1) or VP4 sequences, followed by a BLAST search for similar sequences. All EV-D68 strains were detected between June and October (summer to autumn), except for one strain detected in 2014. A phylogenetic analysis of available VP1 sequences revealed that the Osaka strains detected in 2010, 2013, and 2015 belonged to distinct clusters (Clades C, A, and B [Subclade B3], respectively). Comparison of the 5' untranslated regions of these viruses showed that Osaka strains in Clades A, B (Subclade B3), and C commonly had deletions at nucleotide positions 681-703 corresponding to the prototype Fermon strain. Clades B and C had deletions from nucleotide positions 713-724. Since the EV-D68 epidemic in 2010, EV-D68 re-emerged in Osaka City, Japan, in 2013 and 2015. Results of this study indicate that distinct clades of EV-D68 contributed to re-emergences of this virus in 2010, 2013, and 2015 in this limited region.
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Affiliation(s)
- Atsushi Kaida
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
- * E-mail:
| | - Nobuhiro Iritani
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Seiji P. Yamamoto
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Daiki Kanbayashi
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Yuki Hirai
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | | | - Kiyoko Amo
- Osaka City General Hospital, Osaka, Japan
| | | | | | | | | | - Tsutomu Kageyama
- Influenza Virus Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hideyuki Kubo
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
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15
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Nasal Infection of Enterovirus D68 Leading to Lower Respiratory Tract Pathogenesis in Ferrets (Mustela putorius furo). Viruses 2017; 9:v9050104. [PMID: 28489053 PMCID: PMC5454417 DOI: 10.3390/v9050104] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 04/30/2017] [Accepted: 05/05/2017] [Indexed: 12/25/2022] Open
Abstract
Data from EV-D68-infected patients demonstrate that pathological changes in the lower respiratory tract are principally characterized by severe respiratory illness in children and acute flaccid myelitis. However, lack of a suitable animal model for EV-D68 infection has limited the study on the pathogenesis of this critical pathogen, and the development of a vaccine. Ferrets have been widely used to evaluate respiratory virus infections. In the current study, we used EV-D68-infected ferrets as a potential animal to identify impersonal indices, involving clinical features and histopathological changes in the upper and lower respiratory tract (URT and LRT). The research results demonstrate that the EV-D68 virus leads to minimal clinical symptoms in ferrets. According to the viral load detection in the feces, nasal, and respiratory tracts, the infection and shedding of EV-D68 in the ferret model was confirmed, and these results were supported by the EV-D68 VP1 immunofluorescence confocal imaging with α2,6-linked sialic acid (SA) in lung tissues. Furthermore, we detected the inflammatory cytokine/chemokine expression level, which implied high expression levels of interleukin (IL)-1a, IL-8, IL-5, IL-12, IL-13, and IL-17a in the lungs. These data indicate that systemic observation of responses following infection with EV-D68 in ferrets could be used as a model for EV-D68 infection and pathogenesis.
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16
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Hellferscee O, Treurnicht FK, Tempia S, Variava E, Dawood H, Kahn K, Cohen AL, Pretorius M, Cohen C, Madhi SA, Venter M. Enterovirus D68 and other enterovirus serotypes identified in South African patients with severe acute respiratory illness, 2009-2011. Influenza Other Respir Viruses 2017; 11:211-219. [PMID: 28122175 PMCID: PMC5410726 DOI: 10.1111/irv.12444] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2017] [Indexed: 12/03/2022] Open
Abstract
Background Human enteroviruses (EV) have been associated with severe acute respiratory illness (SARI) in South Africa. Objectives We aimed to describe the molecular epidemiology of EV serotypes among patients hospitalized with SARI during 2009‐2011. Patients/Methods Study samples from patients were tested for the presence of enterovirus using a polymerase chain reaction assay. Results 8.2% (842/10 260) of SARI cases tested positive for enterovirus; 16% (7/45) were species EV‐A, 44% (20/45) EV‐B, 18% (8/45) EV‐C and 22% (10/45) EV‐D. Seventeen different EV serotypes were identified within EV‐A to EV‐D, of which EV‐D68 (22%; 10/45) and Echovirus 3 (11%; 5/45) were the most prevalent. Conclusions EV‐D68 should be monitored in South Africa to assess the emergence of highly pathogenic strains.
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Affiliation(s)
- Orienka Hellferscee
- National Institute for Communicable Diseases of the National Health Laboratory Service; Johannesburg South Africa
- University of the Witwatersrand; Johannesburg South Africa
| | - Florette K. Treurnicht
- National Institute for Communicable Diseases of the National Health Laboratory Service; Johannesburg South Africa
| | - Stefano Tempia
- National Institute for Communicable Diseases of the National Health Laboratory Service; Johannesburg South Africa
- Centres for Disease Control and Prevention; Atlanta Georgia USA
| | - Ebrahim Variava
- University of the Witwatersrand; Johannesburg South Africa
- Pietermaritzburg Metropolitan Hospital; Pietermaritzburg South Africa
| | - Halima Dawood
- Pietermaritzburg Metropolitan Hospital; Pietermaritzburg South Africa
- Caprisa; University of KwaZulu-Natal; Pietermaritzburg South Africa
| | - Kathleen Kahn
- University of the Witwatersrand; Johannesburg South Africa
| | - Adam L. Cohen
- Centres for Disease Control and Prevention; Atlanta Georgia USA
| | | | - Cheryl Cohen
- National Institute for Communicable Diseases of the National Health Laboratory Service; Johannesburg South Africa
- University of the Witwatersrand; Johannesburg South Africa
| | - Shabir A. Madhi
- National Institute for Communicable Diseases of the National Health Laboratory Service; Johannesburg South Africa
- University of the Witwatersrand; Johannesburg South Africa
| | - Marietjie Venter
- Centres for Disease Control and Prevention; Atlanta Georgia USA
- University of Pretoria; Pretoria South Africa
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17
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Li J, Hao C, Liu X, Qin X. Differential evolutionary dynamics of Enterovirus D68 from countries of different continents. Future Virol 2017. [DOI: 10.2217/fvl-2016-0092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aim: To explore the underlying genetic reasons of Enterovirus D68 (EV-D68) for its differential epidemiological patterns among continents. Materials & methods: Four hundred and sixty complete VP1 sequences of EV-D68 from GenBank were analyzed with phylodynamics approaches. Results: Sharp bottlenecks of viral population dynamics in 2014 were observed to be strongly correlated with pandemic prevalence of EV-D68; multi-clade distribution of EV-D68 in the USA and Germany in the time-scaled maximum clade credibility tree of total EV-D68 was also a discriminative feature between pandemic and sporadic prevalences. Conclusion: These findings provide insights into the phylogenetic features of EV-D68 correlated with its differential epidemiological patterns among continents.
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Affiliation(s)
- Jianguo Li
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, China
| | - Chunyan Hao
- College of Chemical & Biological Engineering, Taiyuan University of Science & Technology, Taiyuan 030021, China
| | - Xianjun Liu
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, China
- College of Chemical & Biological Engineering, Taiyuan University of Science & Technology, Taiyuan 030021, China
| | - Xuemei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, China
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18
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A note from the editors: enterovirus D68 epidemiology in France and Germany–food for thought. Euro Surveill 2016; 21:30229. [DOI: 10.2807/1560-7917.es.2016.21.19.30229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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