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Cardenas-de la Garza JA, Manzotti-Rodriguez AC, Gamez-Siller P, Carrazco-Chapa A, Aguirre-Garcia GM, Franco-Marquez R, Hernández-Zamonsett HA, Ramirez-Elizondo MT, Galarza-Delgado DA, Lara-Medrano R. A possible case of cutaneous histoplasmosis and mpox coinfection. Travel Med Infect Dis 2024:102700. [PMID: 38467233 DOI: 10.1016/j.tmaid.2024.102700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 02/18/2024] [Accepted: 02/21/2024] [Indexed: 03/13/2024]
Affiliation(s)
| | | | - Pablo Gamez-Siller
- Rheumatology Department, Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico.
| | - Anahí Carrazco-Chapa
- Rheumatology Department, Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico.
| | - Gloria Mayela Aguirre-Garcia
- Instituto Tecnologico y de Estudios Superiores de Monterrey, School of Medicine and Health Sciences, Monterrey, Nuevo Leon, Mexico.
| | - Rodolfo Franco-Marquez
- Pathology Department, Facultad de Medicina y Hospital Universitario "Dr. José Eleuterio Gonzalez", Universidad Autónoma de Nuevo León, Monterrey, Mexico.
| | | | - Maria Teresa Ramirez-Elizondo
- Infectology Department, Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico.
| | - Dionicio Angel Galarza-Delgado
- Rheumatology Department, Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico.
| | - Reynaldo Lara-Medrano
- Infectology Department, Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico.
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Ghirardo S, Ullmann N, Zago A, Ghezzi M, Minute M, Madini B, D'Auria E, Basile C, Castelletti F, Chironi F, Capodiferro A, Andrenacci B, Risso FM, Aversa S, Dotta L, Coretti A, Vittucci AC, Badolato R, Amaddeo A, Barbi E, Cutrera R. Increased bronchiolitis burden and severity after the pandemic: a national multicentric study. Ital J Pediatr 2024; 50:25. [PMID: 38350986 PMCID: PMC10865582 DOI: 10.1186/s13052-024-01602-3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 01/28/2024] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND The coronavirus 2019 (COVID-19) related containment measures led to the disruption of all virus distribution. Bronchiolitis-related hospitalizations shrank during 2020-2021, rebounding to pre-pandemic numbers the following year. This study aims to describe the trend in bronchiolitis-related hospitalization this year, focusing on severity and viral epidemiology. METHODS We conducted a retrospective investigation collecting clinical records data from all infants hospitalized for bronchiolitis during winter (1st September-31th March) from September 2018 to March 2023 in six Italian hospitals. No trial registration was necessary according to authorization no.9/2014 of the Italian law. RESULTS Nine hundred fifty-three infants were hospitalized for bronchiolitis this last winter, 563 in 2021-2022, 34 in 2020-2021, 395 in 2019-2020 and 483 in 2018-2019. The mean length of stay was significantly longer this year compared to all previous years (mean 7.2 ± 6 days in 2022-2023), compared to 5.7 ± 4 in 2021-2022, 5.3 ± 4 in 2020-2021, 6.4 ± 5 in 2019-2020 and 5.5 ± 4 in 2018-2019 (p < 0.001), respectively. More patients required mechanical ventilation this winter 38 (4%), compared to 6 (1%) in 2021-2022, 0 in 2020-2021, 11 (2%) in 2019-2020 and 6 (1%) in 2018-2019 (p < 0.05), respectively. High-flow nasal cannula and non-invasive respiratory supports were statistically more common last winter (p = 0.001 or less). RSV prevalence and distribution did not differ this winter, but coinfections were more prevalent 307 (42%), 138 (31%) in 2021-2022, 1 (33%) in 2020-2021, 68 (23%) in 2019-2020, 61 (28%) in 2018-2019 (p = 0.001). CONCLUSIONS This study shows a growth of nearly 70% in hospitalisations for bronchiolitis, and an increase in invasive respiratory support and coinfections, suggesting a more severe disease course this winter compared to the last five years.
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Affiliation(s)
- Sergio Ghirardo
- Department of Medicine, Surgery and Health Sciences, University of Trieste, via dell'Istria 65/1, Trieste, Italy.
| | - Nicola Ullmann
- Pediatric Pulmonology and Cystic Fibrosis Unit, Respiratory Intermediate Care Unit, Sleep and Long-Term Ventilation Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alessandro Zago
- Department of Medicine, Surgery and Health Sciences, University of Trieste, via dell'Istria 65/1, Trieste, Italy
| | - Michele Ghezzi
- Department of Pediatrics, Buzzi Children's Hospital, Milan, Italy
| | - Marta Minute
- Ospedale Regionale Ca Foncello Treviso, Treviso, Italy
| | - Barbara Madini
- S.C. Pediatria Pneumoinfettivologia Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Enza D'Auria
- Department of Pediatrics, Buzzi Children's Hospital, Milan, Italy
| | - Cecilia Basile
- Department of Pediatrics, Buzzi Children's Hospital, Milan, Italy
| | | | - Federica Chironi
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, 20122, Italy
| | - Agata Capodiferro
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, 20122, Italy
| | - Beatrice Andrenacci
- Department of Clinical and Experimental Medicine, Section of Pediatrics, University of Pisa, Pisa, Italy
| | - Francesco Maria Risso
- Neonatal Intensive Care Unit, Children's Hospital, ASST Spedali Civili, Brescia, Italy
| | - Salvatore Aversa
- Neonatal Intensive Care Unit, Children's Hospital, ASST Spedali Civili, Brescia, Italy
| | - Laura Dotta
- Department of Pediatrics and "A. Nocivelli" Institute for Molecular Medicine, Department of Clinical and Experimental Sciences, ASST Spedali Civili of Brescia, University of Brescia, Brescia, Italy
| | - Antonella Coretti
- Pediatric Pulmonology and Cystic Fibrosis Unit, Respiratory Intermediate Care Unit, Sleep and Long-Term Ventilation Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Anna Chiara Vittucci
- Pediatric Pulmonology and Cystic Fibrosis Unit, Respiratory Intermediate Care Unit, Sleep and Long-Term Ventilation Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Raffaele Badolato
- Department of Pediatrics and "A. Nocivelli" Institute for Molecular Medicine, Department of Clinical and Experimental Sciences, ASST Spedali Civili of Brescia, University of Brescia, Brescia, Italy
| | - Alessandro Amaddeo
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", Trieste, 34137, Italy
| | - Egidio Barbi
- Department of Medicine, Surgery and Health Sciences, University of Trieste, via dell'Istria 65/1, Trieste, Italy
- Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", Trieste, 34137, Italy
| | - Renato Cutrera
- Pediatric Pulmonology and Cystic Fibrosis Unit, Respiratory Intermediate Care Unit, Sleep and Long-Term Ventilation Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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3
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Zhou X, Wang L, Wang Z, Zhu P, Chen Y, Yu C, Chen S, Xie Y. Impacts of Eimeria coinfection on growth performance, intestinal health and immune responses of broiler chickens. Vet Parasitol 2023; 322:110019. [PMID: 37666058 DOI: 10.1016/j.vetpar.2023.110019] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 04/05/2023] [Revised: 08/16/2023] [Accepted: 08/24/2023] [Indexed: 09/06/2023]
Abstract
Coccidiosis caused by Eimeria is one of the most severe chicken diseases and imposes huge economic losses to the poultry industry globally. Multi-Eimeria species coinfections are common with the most prevalent combination being mixtures of Eimeria acervulina and Eimeria tenella. Although detrimental impacts of either E. acervulina or E. tenella on chicken health are well recognized, no information is available regarding their coinfection effects so far. This study was designed to investigate the influence of coinfection with E. acervulina and E. tenella on broiler chickens. 144 one-day-old broiler chickens within each of trials (trial I or II) were divided into four groups, namely, control group (CG), E. acervulina infection group (EAIG), E. tenella infection group (ETIG) and dual (E. acervulina and E. tenella) infection group (DIG). Then, chickens were measured for weight loss, lesion scores, oocyst outputs, histological changes and expressions of pro-inflammatory (interleukin [IL]-6, IL-8 and IL-18), regulatory (IL-10 and IL-22) cytokines and Toll-like receptors (TLR; TLR2 and TLR4) as well as intestinal barrier (mucin 2 [MUC2] and fattey acid-bingding proteins 2 and 6 [FABP2 and FABP6])- and tight junction (TJ; zonula occluden-1 [ZO-1], occludin [OCLN], and claudins 1 and 5 [CLDN1 and CLDN5])-related proteins at 3, 5, 7, 10, 14 and 21 days post-infection, respectively. Our results consistently showed that although ETIG and DIG exhibited a higher level of weight loss and a more amount of oocyst excretion than EAIG, DIG had lighter lesions than EAIG in the early phase because of coinfection with E. tenella. A higher (P < 0.05) ratio of duodenal villous height to crypt depth was also observed in DIG than EAIG. Moreover, histological changes in the duodenum and cecum varied by single and dual Eimeria infections. Expressions of the intestinal barrier- and TJ-related genes of EAIG, ETIG and DIG were significantly (P < 0.05) upregulated but their levels exhibited differential changes among infected chickens. Similarly, the infected chickens showed significant (P < 0.05) inflammatory responses and higher (P < 0.05) expressions of TLRs in the intestines in comparison to CG. These results presented a comprehensive physiological, pathological and immunological characterization of E. acervulina and E. tenella coinfection in broiler chickens and also shed insights into pathogenesis of multi-coccidia coinfections.
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Affiliation(s)
- Xuan Zhou
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Lidan Wang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhao Wang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Pengchen Zhu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Yijun Chen
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Chunlin Yu
- Sichuan Animal Science Academy, Chengdu 610065, China
| | - Shun Chen
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.
| | - Yue Xie
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.
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Losier A, Gupta G, Caldararo M, Dela Cruz CS. The Impact of Coronavirus Disease 2019 on Viral, Bacterial, and Fungal Respiratory Infections. Clin Chest Med 2023; 44:407-423. [PMID: 37085229 PMCID: PMC9968485 DOI: 10.1016/j.ccm.2022.11.018] [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] [Indexed: 02/27/2023]
Abstract
Although coronavirus disease 2019 (COVID-19) remains an ongoing threat, concerns regarding other respiratory infections remain. Throughout the COVID-19 pandemic various epidemiologic trends have been observed in other respiratory viruses including a reduction in influenza and respiratory syncytial virus infections following onset of the COVID-19 pandemic. Observations suggest that infections with other respiratory viruses were reduced with social distancing, mask wearing, eye protection, and hand hygiene practices. Coinfections with COVID-19 exist not only with other respiratory viruses but also with bacterial pneumonias and other nosocomial and opportunistic infections. Coinfections have been associated with increased severity of illness and other adverse outcomes.
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Affiliation(s)
- Ashley Losier
- Department of Internal Medicine, Section of Pulmonary and Critical Care Medicine, Yale University School of Medicine, New Haven, CT 06511, USA.
| | - Gayatri Gupta
- Department of Internal Medicine, Section of Pulmonary and Critical Care Medicine, Yale University School of Medicine, New Haven, CT 06511, USA
| | - Mario Caldararo
- Veteran's Affairs Connecticut Healthcare System, West Haven, CT 06516, USA
| | - Charles S Dela Cruz
- Department of Internal Medicine, Section of Pulmonary and Critical Care Medicine, Yale University School of Medicine, New Haven, CT 06511, USA
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5
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Wei S, Wang L, Lin L, Liu X. Predictive values of procalcitonin for coinfections in patients with COVID-19: a systematic review and meta-analysis. Virol J 2023; 20:92. [PMID: 37158904 PMCID: PMC10166029 DOI: 10.1186/s12985-023-02042-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 04/13/2023] [Indexed: 05/10/2023] Open
Abstract
OBJECTIVES To assess the ability of procalcitonin (PCT)-a promising marker for coinfections-to predict coinfections in patients with COVID-19. METHODS In this systematic review and meta-analysis, PubMed, Embase, Web of Science, Cochrane, the China National Knowledge Infrastructure (CNKI), and Wanfang were searched to identify eligible studies (up to August 30, 2021). Articles that reported the predictive value of PCT for coinfections in patients with COVID-19 were included. Individual and pooled sensitivities and specificities were reported, and I2 was used to test heterogeneity. This study was prospectively registered on the International Prospective Register of Systematic Reviews (PROSPERO) database (registration number: CRD42021283344). RESULTS Five studies involving a total of 2775 patients reported the predictive value of PCT for coinfections in patients with COVID-19. The sensitivity, specificity, and area under the curve of PCT in predicting coinfections in the pooled studies were 0.60 (95% CI 0.35-0.81, I2 = 88.85), 0.71 (95% CI 0.58-0.81, I2 = 87.82), and 0.72(95% CI 0.68-0.76) respectively. CONCLUSIONS Although PCT has limited predictive value for coinfections in patients with COVID-19, lower PCT levels seem to indicate a decreased probability of having a coinfection.
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Affiliation(s)
- Shanchen Wei
- Department of Geriatrics, Peking University First Hospital, Xishiku Avenue No 8, Xicheng District, Beijing, 100034, China
| | - Lina Wang
- Department of Geriatrics, Peking University First Hospital, Xishiku Avenue No 8, Xicheng District, Beijing, 100034, China
| | - Lianjun Lin
- Department of Geriatrics, Peking University First Hospital, Xishiku Avenue No 8, Xicheng District, Beijing, 100034, China.
| | - Xinmin Liu
- Department of Geriatrics, Peking University First Hospital, Xishiku Avenue No 8, Xicheng District, Beijing, 100034, China.
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Maldonado-Barrueco A, Sanz-González C, Gutiérrez-Arroyo A, Grandioso-Vas D, Roces-Álvarez P, Sendagorta-Cudos E, Falces-Romero I, Mingorance J, García-Rodríguez J, Quiles-Melero I. Sexually transmitted infections and clinical features in monkeypox (mpox) patients in Madrid, Spain. Travel Med Infect Dis 2023; 52:102544. [PMID: 36669636 PMCID: PMC9846951 DOI: 10.1016/j.tmaid.2023.102544] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/02/2023] [Accepted: 01/16/2023] [Indexed: 01/19/2023]
Abstract
Since the beginning of the monkeypox (mpox) virus outbreak in May 2022, there has been an increase in the number of cases worldwide in the setting of sexual transmission. We have tested by real-time PCR 187 mpox patients, of which 157 patients were screened for sexually transmitted infections (STI) in 245 samples. Thirty-six pathogens were detected in 30 patients: herpes simplex virus (HSV-I/II, 12/36, 33.3%), Neisseria gonorrhoeae (NG, 9/36, 25%), Chlamydia trachomatis (CT, 5/36, 13.8%), Chlamydia trachomatis-lymphogranuloma venereum (CT-LGV, 3/36, 8.3%), Treponema pallidum (TP, 4/36, 11.1%) and Mycoplasma genitalium (MG, 3/36, 8.3%). Screening of STI is recommended in mpox patients for the differential diagnosis of the main infections of sexual tract especially in patients with rectal involvement.
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Affiliation(s)
| | | | | | - David Grandioso-Vas
- Clinical Microbiology Department, Hospital Universitario La Paz, Madrid, Spain
| | | | | | - Iker Falces-Romero
- Clinical Microbiology Department, Hospital Universitario La Paz, Madrid, Spain
| | - Jesús Mingorance
- Clinical Microbiology Department, Hospital Universitario La Paz, Madrid, Spain; IdiPaz, Research Institute, Hospital Universitario La Paz, Madrid, Spain
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Ibemgbo SA, Nyodu R, Chaudhary S, Verma DK, Dixit K, Nayak K, Rani V, Gaind R, Chandele A, Sunil S. Short communication: Virological and B cell profiles of chikungunya and Dengue virus co-infections in Delhi during 2017-2019. Virus Res 2022; 320:198888. [PMID: 35977625 DOI: 10.1016/j.virusres.2022.198888] [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: 07/26/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/23/2022]
Abstract
With explosive epidemics of chikungunya in India since 2004, chikungunya virus (CHIKV) now co-circulates in geographical areas where Dengue virus (DENV) is already endemic and thus provides opportunity for the same mosquito to be infected with both viruses. Although there are excellent studies that have addressed the clinical of mono and co-infection, we have little to no knowledge on the current viral sequences that pre-dominate co-infections, and the B cell response elicited. In this study, we analyzed febrile patients that were confirmed to have DENV-CHIKV co-infections and asked the following questions: 1) what is the frequency of co-infections found in a single cycle of transmission; 2) what are the viral sequences associated with them; 3) what does the antibody secreting cell / plasmablast response look like in patients that are co-infected with both viruses. We report those co-infections occur at a frequency of 6.7% in the transmission cycle, and while DENV-3 is now frequently detected, we do not see a serotype bias in the patients that are co-infected with ESCA strain of CHIKV. Moreover, the effector B cell response (plasmablasts) observed are specific to both infecting viruses indicating no overt bias. Further studies to associate whether any of these properties have a bearing on clinical disease manifestation will be both timely and important.
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Affiliation(s)
- Sylvester Agha Ibemgbo
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Rajni Nyodu
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Sakshi Chaudhary
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Dileep Kumar Verma
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Kritika Dixit
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Kaustuv Nayak
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Vandana Rani
- Dept of Microbiology, Vardhman Mahavir Medical College & Safdarjung Hospital, New Delhi, India
| | - Rajni Gaind
- Dept of Microbiology, Vardhman Mahavir Medical College & Safdarjung Hospital, New Delhi, India
| | - Anmol Chandele
- ICGEB-Emory Vaccine Center, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.
| | - Sujatha Sunil
- Vector Borne Diseases Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.
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Ceballos ME, Nuñez C, Uribe J, Vera MM, Castro R, García P, Arriata G, Gándara V, Vargas C, Dominguez A, Cerón I, Born P, Espíndola E. Secondary respiratory early and late infections in mechanically ventilated patients with COVID-19. BMC Infect Dis 2022; 22:760. [PMID: 36175841 PMCID: PMC9521562 DOI: 10.1186/s12879-022-07743-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 10/12/2021] [Accepted: 09/08/2022] [Indexed: 12/15/2022] Open
Abstract
Background Patients with COVID-19 receiving mechanical ventilation may become aggravated with a secondary respiratory infection. The aim of this study was to describe secondary respiratory infections, their predictive factors, and outcomes in patients with COVID-19 requiring mechanical ventilation. Methods A cohort study was carried out in a single tertiary hospital in Santiago, Chile, from 1st June to 31st July 2020. All patients with COVID-19 admitted to the intensive care unit that required mechanical ventilation were included. Results A total of 175 patients were enrolled, of which 71 (40.6%) developed at least one secondary respiratory infection during follow-up. Early and late secondary infections were diagnosed in 1.7% and 31.4% respectively. Within late secondary infections, 88% were bacterial, 10% were fungal, and 2% were of viral origin. One-third of isolated bacteria were multidrug-resistant. Bivariate analysis showed that the history of corticosteroids used before admission and the use of dexamethasone during hospitalization were associated with a higher risk of secondary infections (p = 0.041 and p = 0.019 respectively). Multivariate analysis showed that for each additional day of mechanical ventilation, the risk of secondary infection increases 1.1 times (adOR = 1.07; 95% CI 1.02–1.13, p = 0.008) Conclusions Patients with COVID-19 admitted to the intensive care unit and requiring mechanical ventilation had a high rate of secondary infections during their hospital stay. The number of days on MV was a risk factor for acquiring secondary respiratory infections. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07743-2.
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Affiliation(s)
- María Elena Ceballos
- Infectious Disease Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay 362, 6th Floor, Santiago, Chile.
| | - Carolina Nuñez
- Infectious Disease Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay 362, 6th Floor, Santiago, Chile
| | - Javier Uribe
- Internal Medicine Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - María Magdalena Vera
- Intensive Medicine Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ricardo Castro
- Intensive Medicine Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Patricia García
- Clinical Laboratory Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gabriel Arriata
- Clinical Laboratory Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Vicente Gándara
- School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Camila Vargas
- School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Angélica Dominguez
- Department of Public Health, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Inés Cerón
- Infectious Disease Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay 362, 6th Floor, Santiago, Chile
| | - Pablo Born
- Intensive Medicine Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Eduardo Espíndola
- Intensive Medicine Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
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Herrera L, Morocoima A, Lozano-Arias D, García-Alzate R, Viettri M, Lares M, Ferrer E. Infections and Coinfections by Trypanosomatid Parasites in a Rural Community of Venezuela. Acta Parasitol 2022; 67:1015-1023. [PMID: 35013940 DOI: 10.1007/s11686-021-00505-1] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 11/29/2021] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Trypanosoma cruzi, Trypanosoma rangeli and Leishmania spp. are parasites that coexist in several endemic areas. The identification of these parasites in hosts is important for the control programs. METHODS 216 samples from human blood (101), blood of other mammals (45) and triatomine intestinal content and hemolymph (70), from an endemic area of Venezuela, were analysed. The samples were evaluated by; serology (only humans) and PCR for T. cruzi in human, other mammals and triatomines, PCR for T. rangeli in mammals-including human and triatomines and PCR for Leishmania in mammals-including human. RESULTS The 9.9% of the human samples were positive for T. cruzi by serology, 11.9% by PCR, 4% for T. rangeli PCR and none for Leishmania spp. PCR. 60% of the samples of other mammals showed DNA amplification for T. cruzi, 42.2% for T. rangeli and 4.4% for Leishmania spp. 61.4% of the triatomine samples showed DNA amplification for T. cruzi and 10% for T. rangeli. CONCLUSIONS High T. cruzi infection was detected in mammals and triatomines compared with T. rangeli. Low leishmanial infection was detected in other mammals. It is the first time that T. cruzi/T. rangeli coinfection, in humans, Canis familiaris (dog), and Bos Taurus (cow), were reported world-wide, and that this coinfection was described in Tamandua tetradactyla (anteater) from Venezuela. The coinfection T. cruzi/T. rangeli in mammals-including humans and triatomines, and coinfection T. cruzi/Leishmania spp. in non-human mammals, show the risk for trypanosomic zoonoses in this endemic area.
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Affiliation(s)
- Leidi Herrera
- Instituto de Zoología y Ecología Tropical (IZET), Facultad de Ciencias, Universidad Central de Venezuela (UCV), Caracas, Venezuela
| | - Antonio Morocoima
- Centro de Medicina Tropical de Oriente, Universidad de Oriente (UDO), Núcleo Anzoátegui, Barcelona, Estado Anzoátegui, Venezuela
| | - Daisy Lozano-Arias
- Instituto de Zoología y Ecología Tropical (IZET), Facultad de Ciencias, Universidad Central de Venezuela (UCV), Caracas, Venezuela
- Fundación Universitaría San Martín, Sede Puerto Colombia, Barranquilla, Colombia
| | - Roberto García-Alzate
- Instituto de Zoología y Ecología Tropical (IZET), Facultad de Ciencias, Universidad Central de Venezuela (UCV), Caracas, Venezuela
- Grupo de Investigación en Biodiversidad, Universidad del Atlantico, Barranquilla, Atlántico, Colombia
| | - Mercedes Viettri
- Instituto de Investigaciones Biomédicas "Dr. Francisco J. Triana Alonso" (BIOMED), Facultad de Ciencias de la Salud Sede Aragua, Universidad de Carabobo, Maracay, Estado Aragua, Venezuela
| | - María Lares
- Instituto de Investigaciones Biomédicas "Dr. Francisco J. Triana Alonso" (BIOMED), Facultad de Ciencias de la Salud Sede Aragua, Universidad de Carabobo, Maracay, Estado Aragua, Venezuela
| | - Elizabeth Ferrer
- Instituto de Investigaciones Biomédicas "Dr. Francisco J. Triana Alonso" (BIOMED), Facultad de Ciencias de la Salud Sede Aragua, Universidad de Carabobo, Maracay, Estado Aragua, Venezuela.
- Departamento de Parasitología, Facultad de Ciencias de la Salud Sede Aragua, Universidad de Carabobo, Maracay, Estado Aragua, Venezuela.
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10
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Kim SC, Kim JH, Kim JY, Park GS, Jeong CG, Kim WI. Prevalence of porcine parvovirus 1 through 7 (PPV1-PPV7) and co-factor association with PCV2 and PRRSV in Korea. BMC Vet Res 2022; 18:133. [PMID: 35395853 PMCID: PMC8994367 DOI: 10.1186/s12917-022-03236-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 08/25/2021] [Accepted: 03/30/2022] [Indexed: 11/10/2022] Open
Abstract
Background Classical porcine parvovirus (PPV1) and novel porcine parvoviruses designated porcine parvovirus 2 through 7 (PPV2-PPV7) are widespread in pig populations. The objective of this study was to investigate the prevalence rates of PPV1-PPV7 in Korea by detecting PPVs in serum, lung and fecal samples and to elucidate the association of PPVs with porcine circovirus type 2 (PCV2) and porcine reproductive and respiratory virus (PRRSV), major pathogens involved in porcine respiratory disease complex (PRDC). A total of 286 serum, 481 lung, and 281 fecal samples collected from 2018 to 2020 were analyzed. Results The results showed that PPVs are widespread in Korea; the highest detection rates were found in lung samples and ranged from 7.9% (PPV1) to 32.6% (PPV2). Regarding age groups, fattening pigs had the highest detection rates of PPVs, ranging from 6.4% (PPV1) to 36.5% (PPV6); this finding suggests the chronic nature of PPV infections and the continual circulation of these viruses. When compared with PCV2- and PRRSV-negative lung samples, PCV2-positive samples with or without PRRSV positivity had significantly higher detection levels of PPV1 and PPV6. In contrast, the prevalence of PPV2 and PPV7 was significantly higher in PRRSV-infected lung samples regardless of PCV2 detection. PPV5 was detected significantly more frequently in samples with both PCV2 and PRRSV positivity. Conclusions This study could offer a better understanding of the role of PPVs in PCV2 and/or PRRSV infection though further studies are needed to experimentally assess the impact of PPVs in coinfections. Supplementary Information The online version contains supplementary material available at 10.1186/s12917-022-03236-1.
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Affiliation(s)
- Seung-Chai Kim
- College of Veterinary Medicine, Jeonbuk National University, 79 Gobong-ro, Iksan, 54596, Korea
| | - Jae-Hong Kim
- College of Veterinary Medicine, Jeonbuk National University, 79 Gobong-ro, Iksan, 54596, Korea
| | - Jae-Yeob Kim
- College of Veterinary Medicine, Jeonbuk National University, 79 Gobong-ro, Iksan, 54596, Korea
| | - Gyeong-Seo Park
- College of Veterinary Medicine, Jeonbuk National University, 79 Gobong-ro, Iksan, 54596, Korea
| | - Chang-Gi Jeong
- College of Veterinary Medicine, Jeonbuk National University, 79 Gobong-ro, Iksan, 54596, Korea
| | - Won-Il Kim
- College of Veterinary Medicine, Jeonbuk National University, 79 Gobong-ro, Iksan, 54596, Korea.
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11
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Hartmann AM, Maddox ML, Ossiboff RJ, Longo AV. Sustained Ranavirus Outbreak Causes Mass Mortality and Morbidity of Imperiled Amphibians in Florida. Ecohealth 2022; 19:8-14. [PMID: 35000043 DOI: 10.1007/s10393-021-01572-6] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 11/10/2021] [Indexed: 06/14/2023]
Abstract
A persistent 2-month long outbreak of Ranavirus in a natural community of amphibians contributed to a mass die-off of gopher frog tadpoles (Lithobates capito) and severe disease in striped newts (Notophthalmus perstriatus) in Florida. Ongoing mortality in L. capito and disease signs in N. perstriatus continued for 5 weeks after the first observation. Hemorrhagic disease and necrosis were diagnosed from pathological examination of L. capito tadpoles. We confirmed detection of a frog virus 3 (FV3)-like Ranavirus via quantitative PCR in all species. Our findings highlight the susceptibility of these species to Rv and the need for long-term disease surveillance during epizootics.
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Affiliation(s)
- Arik M Hartmann
- Department of Biology, College of Liberal Arts and Sciences, University of Florida, Gainesville, FL, 32611, USA.
| | - Max L Maddox
- Department of Wildlife Ecology and Conservation, College of Agriculture and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
| | - Robert J Ossiboff
- Department of Comparative, Diagnostic, and Population Medicine, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Ana V Longo
- Department of Biology, College of Liberal Arts and Sciences, University of Florida, Gainesville, FL, 32611, USA
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12
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Abstract
Until recently, it was assumed that insects lack immune memory since they do not have vertebrate-like specialized memory cells. Therefore, their most well studied evolutionary response against pathogens was increased basal immunity. However, growing evidence suggests that many insects also exhibit a form of immune memory (immune priming), where prior exposure to a low dose of infection confers protection against subsequent infection by the same pathogen that acts both within and across generations. Most strikingly, they can rapidly evolve as a highly parallel and mutually exclusive strategy from basal immunity, under different selective conditions and with divergent evolutionary trade-offs. However, the relative importance of priming as an optimal immune strategy also has contradictions, primarily because supporting mechanisms are still unclear. In this review, we adopt a comparative approach to highlight several emerging evolutionary, ecological and mechanistic features of priming vs basal immune responses that warrant immediate attention for future research.
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Affiliation(s)
- Arun Prakash
- Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, EH9 3FL, United Kingdom.
| | - Imroze Khan
- Department of Biology, Ashoka University, Plot No. 2, Rajiv Gandhi Education City, P.O. Rai, Sonepat, Haryana, 131029, India.
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13
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Manzi F, Halle S, Seemann L, Ben-Ami F, Wolinska J. Sequential infection of Daphnia magna by a gut microsporidium followed by a haemolymph yeast decreases transmission of both parasites. Parasitology 2021; 148:1566-77. [PMID: 35060463 DOI: 10.1017/S0031182021001384] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Over the course of seasonal epidemics, populations of susceptible hosts may encounter a wide variety of parasites. Parasite phenology affects the order in which these species encounter their hosts, leading to sequential infections, with potentially strong effects on within-host growth and host population dynamics. Here, the cladoceran Daphnia magna was exposed sequentially to a haemolymph-infecting yeast (Metschnikowia bicuspidata) and a gut microsporidium (Ordospora colligata), with experimental treatments reflecting two possible scenarios of parasite succession. The effects of single and co-exposure were compared on parasite infectivity, spore production and the overall virulence experienced by the host. We show that neither parasite benefited from coinfection; instead, when hosts encountered Ordospora, followed by Metschnikowia, higher levels of host mortality contributed to an overall decrease in the transmission of both parasites. These results showcase an example of sequential infections generating unilateral priority effects, in which antagonistic interactions between parasites can alleviate the intensity of infection and coincide with maladaptive levels of damage inflicted on the host.
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14
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Suresh CS, Ninan MM, Zachariah A, Michael JS. Cryptococcosis with Tuberculosis: Overlooked Coinfections. J Glob Infect Dis 2021; 13:139-141. [PMID: 34703154 PMCID: PMC8491810 DOI: 10.4103/jgid.jgid_330_20] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 10/28/2020] [Accepted: 04/15/2021] [Indexed: 11/23/2022] Open
Abstract
Tuberculosis and cryptococcosis are important opportunistic pathogens causing significant morbidity and mortality in immunocompromised individuals. Concurrent infections of these two agents are rarely reported. We report five cases of culture-proven coinfection of Mycobacterium tuberculosis and Cryptococcus neoformans during inpatient admission at a tertiary care hospital in southern India between 2007 and 2019. Four patients were persons living with HIV infection and one was on immune suppression for chronic renal disease. Maintaining a high degree of clinical suspicion will ensure early diagnosis and appropriate management of coinfections in the immunocompromised individual.
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Affiliation(s)
| | - Marilyn M Ninan
- Department of Clinical Microbiology, CMC, Vellore, Tamil Nadu, India
| | | | - Joy S Michael
- Department of Clinical Microbiology, CMC, Vellore, Tamil Nadu, India
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15
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Delfino CM, Giorgio M, García G, Puch SS, Outon E, Mathet VL. Drug-resistant and immune-escape hepatitis B virus mutants, occult hepatitis B infection and coinfections in public hospital patients from Argentina. Virus Genes 2021; 57:327-337. [PMID: 34091827 DOI: 10.1007/s11262-021-01850-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 02/19/2021] [Accepted: 05/24/2021] [Indexed: 01/02/2023]
Abstract
Argentina exhibits low serological prevalence for Hepatitis B virus (HBV); however, occult hepatitis B infection (OBI) has been reported in blood donors, Amerindians and individuals coinfected with hepatitis C virus (HCV), and/or human immunodeficiency virus (HIV). The aim of this study was to analyze the genetic diversity of HBV and to evaluate serological marker associations and coinfections with HCV and HIV in patients attending and treated in a public hospital in the province of Buenos Aires, Argentina. A total of 189 HBV reactive samples (HBsAg and/or anti-HBc) were analyzed for HBV DNA characterization. All reactive samples were tested for anti-HCV and HIV-antigen/antibody using CMIA assays. Thirty-six samples exhibited detectable HBV DNA, 7 of which were OBI. HBV sequences were classified as subgenotypes A1, A2, B2, D3, F1b, F3 and F4. Mutations related to the ability to escape the host's immune response, resistance to antiviral therapy and progression to disease were found in patients, partly due to the variable sensitivity of HBsAg, the reverse transcriptase, the basal core promoter and the preCore. HCV and HIV prevalence was 10% and most of the genotypes found in the sequences were genotype 1 and B/F recombinant subtype, respectively. Of the total samples analyzed, 7 exhibited coinfections. This study shows the frequency of OBI, subgenotype distribution, HBV mutations and coinfections, which may have important clinical implications in public hospital patients. Planned prevention, detection and treatment adherence are needed to reduce transmission and morbidity in vulnerable populations.
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Affiliation(s)
- Cecilia María Delfino
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Universidad de Buenos Aires (UBA), Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPAM), Paraguay 2155 P11 (C1121ABG), Ciudad Autónoma de Buenos Aires, Argentina.
| | - Marianela Giorgio
- Laboratorio de Virología, Hospital Interzonal General de Agudos "Dr. Pedro Fiorito", Avellaneda, Buenos Aires, Argentina
| | - Gabriela García
- Laboratorio de Virología, Hospital Interzonal General de Agudos "Dr. Pedro Fiorito", Avellaneda, Buenos Aires, Argentina
| | - Silvia Sánchez Puch
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Universidad de Buenos Aires (UBA), Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPAM), Paraguay 2155 P11 (C1121ABG), Ciudad Autónoma de Buenos Aires, Argentina
| | - Estela Outon
- Laboratorio de Virología, Hospital Interzonal General de Agudos "Dr. Pedro Fiorito", Avellaneda, Buenos Aires, Argentina
| | - Verónica Lidia Mathet
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Universidad de Buenos Aires (UBA), Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPAM), Paraguay 2155 P11 (C1121ABG), Ciudad Autónoma de Buenos Aires, Argentina
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16
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Foschi C, Zignoli A, Gaibani P, Vocale C, Rossini G, Lafratta S, Liberatore A, Turello G, Lazzarotto T, Ambretti S. Respiratory bacterial co-infections in intensive care unit-hospitalized COVID-19 patients: Conventional culture vs BioFire FilmArray pneumonia Plus panel. J Microbiol Methods 2021; 186:106259. [PMID: 34062210 PMCID: PMC8164500 DOI: 10.1016/j.mimet.2021.106259] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/28/2021] [Accepted: 05/28/2021] [Indexed: 12/29/2022]
Abstract
The prevalence and microbiology of concomitant respiratory bacterial infections in patients with SARS-CoV-2 infection are not yet fully understood. In this retrospective study, we assessed respiratory bacterial co-infections in lower respiratory tract samples taken from intensive care unit-hospitalized COVID-19 patients, by comparing the conventional culture approach to an innovative molecular diagnostic technology. A total of 230 lower respiratory tract samples (i.e., bronchial aspirates or bronchoalveolar lavages) were taken from 178 critically ill COVID-19 patients. Each sample was processed by a semi-quantitative culture and by a multiplex PCR panel (FilmArray Pneumonia Plus panel), allowing rapid detection of a wide range of clinically relevant pathogens and a limited number of antimicrobial resistance markers. More than 30% of samples showed a positive bacterial culture, with Pseudomonas aeruginosa, Klebsiella pneumoniae and Staphylococcus aureus the most detected pathogens. FilmArray showed an overall sensitivity and specificity of 89.6% and 98.3%, respectively, with a negative predictive value of 99.7%. The molecular test significantly reduced the turn-around-time (TAT) and increased the rates of microbial detection. Most cases missed by culture were characterized by low bacterial loads (104–105 copies/mL). FilmArray missed a list of pathogens not included in the molecular panel, especially Stenotrophomonas maltophilia (8 cases). FilmArray can be useful to detect bacterial pathogens in lower respiratory tract specimens of COVID-19 patients, with a significant decrease of TAT. The test is particularly useful to rule out bacterial co-infections and avoid the inappropriate prescription of antibiotics.
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Affiliation(s)
- Claudio Foschi
- Microbiology, DIMES, University of Bologna, via Massarenti 9, Bologna, Italy; Microbiology Unit, IRCCS S.Orsola-Malpighi Hospital, Via Massarenti n 9, Bologna, Italy.
| | - Anna Zignoli
- Microbiology, DIMES, University of Bologna, via Massarenti 9, Bologna, Italy
| | - Paolo Gaibani
- Microbiology Unit, IRCCS S.Orsola-Malpighi Hospital, Via Massarenti n 9, Bologna, Italy
| | - Caterina Vocale
- Microbiology Unit, IRCCS S.Orsola-Malpighi Hospital, Via Massarenti n 9, Bologna, Italy
| | - Giada Rossini
- Microbiology Unit, IRCCS S.Orsola-Malpighi Hospital, Via Massarenti n 9, Bologna, Italy
| | - Silvia Lafratta
- Microbiology, DIMES, University of Bologna, via Massarenti 9, Bologna, Italy
| | - Andrea Liberatore
- Microbiology, DIMES, University of Bologna, via Massarenti 9, Bologna, Italy
| | - Gabriele Turello
- Microbiology, DIMES, University of Bologna, via Massarenti 9, Bologna, Italy
| | - Tiziana Lazzarotto
- Microbiology, DIMES, University of Bologna, via Massarenti 9, Bologna, Italy; Microbiology Unit, IRCCS S.Orsola-Malpighi Hospital, Via Massarenti n 9, Bologna, Italy
| | - Simone Ambretti
- Microbiology Unit, IRCCS S.Orsola-Malpighi Hospital, Via Massarenti n 9, Bologna, Italy
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17
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Pousibet-Puerto J, Lozano-Serrano AB, Soriano-Pérez MJ, Vázquez-Villegas J, Giménez-López MJ, Cabeza-Barrera MI, Cuenca-Gómez JÁ, Palanca-Giménez M, Luzón-García MP, Castillo-Fernández N, Cabezas-Fernández MT, Salas-Coronas J. Migration-associated malaria from Africa in southern Spain. Parasit Vectors 2021; 14:240. [PMID: 33962647 PMCID: PMC8103587 DOI: 10.1186/s13071-021-04727-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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] [Received: 01/29/2021] [Accepted: 04/16/2021] [Indexed: 11/23/2022] Open
Abstract
Background The western area of the province of Almeria, sited in southern Spain, has one of the highest immigrant population rates in Spain, mainly dedicated to agricultural work. In recent years, there has been a significant increase in the number of cases of imported malaria associated with migrants from countries belonging to sub-Saharan Africa. The objective of our study is to describe the epidemiological, clinical and analytical characteristics of malaria patients treated in a specialized tropical unit, paying special attention to the differences between VFR and non-VFR migrants and also to the peculiarities of microscopic malaria cases compared to submicroscopic ones. Methods Retrospective observational study of migrants over 14 years of age with imported malaria treated from October 2004 to May 2019. Characteristics of VFR and non-VFR migrants were compared. Malaria cases were divided into microscopic malaria (MM) and submicroscopic malaria (SMM). SMM was defined as the presence of a positive malaria PCR test together with a negative direct microscopic examination and a negative rapid diagnostic test (RDT). Microscopic malaria was defined as the presence of a positive RDT and/or a positive smear examination. Results Three hundred thirty-six cases of malaria were diagnosed, 329 in sub-Saharan immigrants. Of these, 78.1% were VFR migrants, in whom MM predominated (85.2% of cases). In non-VFR migrants, SMM represented 72.2% of the cases. Overall, 239 (72.6%) patients presented MM and 90 (27.4%) SMM. Fever was the most frequent clinical manifestation (64.4%), mainly in the MM group (MM: 81.1% vs SMM: 20.0%; p < 0.01). The most frequent species was P. falciparum. Patients with SMM presented fewer cytopenias and a greater number of coinfections due to soil-transmitted helminths, filarial and intestinal protozoa compared to patients with MM. Conclusions Imported malaria in our area is closely related to sub-Saharan migration. VFR migrants are the main risk group, highlighting the need for actions aimed at improving disease prevention measures. On the other hand, almost a third of the cases are due to SMM. This fact could justify its systematic screening, at least for those travelers at greater risk. Graphic Abstract ![]()
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Joaquín Salas-Coronas
- Tropical Medicine Unit. Hospital de Poniente, El Ejido, Almería, Spain. .,CEMyRI (Center for the Study of Migration and Intercultural Relations) of the University of Almeria, Almería, Spain.
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18
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Silva DL, Lima CM, Magalhães VCR, Baltazar LM, Peres NTA, Caligiorne RB, Moura AS, Fereguetti T, Martins JC, Rabelo LF, Abrahão JS, Lyon AC, Johann S, Santos DA. Fungal and bacterial coinfections increase mortality of severely ill COVID-19 patients. J Hosp Infect 2021; 113:145-54. [PMID: 33852950 DOI: 10.1016/j.jhin.2021.04.001] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/30/2021] [Accepted: 04/05/2021] [Indexed: 12/15/2022]
Abstract
Background SARS-CoV-2 predisposes patients to secondary infections; however, a better understanding of the impact of coinfections on the outcome of hospitalized COVID-19 patients is still necessary. Aim To analyse death risk due to coinfections in COVID-19 patients. Methods The odds of death of 212 severely ill COVID-19 patients were evaluated, with detailed focus on the risks for each pathogen, site of infection, comorbidities and length of hospitalization. Findings The mortality rate was 50.47%. Fungal and/or bacterial isolation occurred in 89 patients, of whom 83.14% died. Coinfected patients stayed hospitalized longer and had an increased odds of dying (odds ratio (OR): 13.45; R2 = 0.31). The risk of death was increased by bacterial (OR: 11.28) and fungal (OR: 5.97) coinfections, with increased levels of creatinine, leucocytes, urea and C-reactive protein. Coinfections increased the risk of death if patients suffered from cardiovascular disease (OR: 11.53), diabetes (OR: 6.00) or obesity (OR: 5.60) in comparison with patients with these comorbidities but without pathogen isolation. The increased risk of death was detected for coagulase-negative Staphylococcus (OR: 25.39), Candida non-albicans (OR: 11.12), S. aureus (OR: 10.72), Acinetobacter spp. (OR: 6.88), Pseudomonas spp. (OR: 4.77), and C. albicans (OR: 3.97). The high-risk sites of infection were blood, tracheal aspirate, and urine. Patients with coinfection undergoing invasive mechanical ventilation were 3.8 times more likely to die than those without positive cultures. Conclusion Severe COVID-19 patients with secondary coinfections required longer hospitalization and had higher risk of death. The early diagnosis of coinfections is essential to identify high-risk patients and to determine the right interventions to reduce mortality.
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19
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Danion F, Duval C, Séverac F, Bachellier P, Candolfi E, Castelain V, Clere-Jehl R, Denis J, Dillenseger L, Epailly E, Gantzer J, Guffroy B, Hansmann Y, Herbrecht JE, Letscher-Bru V, Leyendecker P, Le Van Quyen P, Ludes PO, Morel G, Moulin B, Paillard C, Renaud-Picard B, Roche AC, Sabou M, Schneider F, Solis M, Talagrand-Reboul E, Veillon F, Ledoux MP, Simand C, Herbrecht R. Factors associated with coinfections in invasive aspergillosis: a retrospective cohort study. Clin Microbiol Infect 2021; 27:1644-1651. [PMID: 33662543 DOI: 10.1016/j.cmi.2021.02.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/21/2020] [Revised: 02/16/2021] [Accepted: 02/16/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To describe the coinfections in invasive aspergillosis (IA), to identify factors associated with coinfections, and to evaluate the impact of coinfection on mortality. PATIENTS AND METHODS We conducted a monocentric retrospective study of consecutive putative, probable, or proven IA that occurred between 1997 and 2017. All coinfections, with an onset within 7 days before or after the first sign of aspergillosis, were identified. Factors associated with coinfections and mortality were analysed by multivariable analysis. RESULTS Among the 690 patients with IA included in the study, the median age was 57 years (range 7 days to 90 years). A coinfection was diagnosed in 272/690 patients (39.4%, 95%CI 35.8-43.2). The location of this coinfection was pulmonary only in 131/272 patients (48%), bloodstream only in 66/272 patients (24%) and other/multiple sites in 75/272 patients (28%). Coinfections were bacterial (110/272 patients, 40%), viral (58/272, 21%), fungal (57/272, 21%), parasitic (5/272, 2%) or due to multiple types of pathogens (42/272, 15%). Factors associated with a coinfection in adjusted analysis were: allogeneic haematopoietic stem-cell transplantation (OR 2.3 (1.2-4.4)), other haematological malignancies (OR 2.1 (1.2-3.8)), other underlying diseases (OR 4.3 (1.4-13.6)), lymphopenia (OR 1.7 (1.1-2.5)), C-reactive protein >180 mg/L (OR 1.9 (1.2-3.0)), fever (OR 2.4 (1.5-4.1)), tracheal intubation (OR 2.6 (1.5-4.7)), isolation of two or more different Aspergillus species (OR 2.7 (1.1-6.3)), and the presence of non-nodular lesions on chest computed tomography (OR 2.2 (1.3-3.7) and OR 2.2 (1.2-4.0)). Coinfections were independently associated with a higher mortality at week 12 (adjusted HR 1.5 (1.1-1.9), p < 0.01). CONCLUSIONS Coinfections are frequent in IA patients and are associated with higher mortality.
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Affiliation(s)
- François Danion
- Department of Infectious Diseases, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Céline Duval
- Department of Haematology, Institut de Cancérologie de Strasbourg (ICANS), Strasbourg, France
| | - François Séverac
- Department of Biostatistics and Public Healthcare, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; ICube, UMR7357, Université de Strasbourg, Strasbourg, France
| | - Philippe Bachellier
- Department of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Ermanno Candolfi
- Department of Parasitology and Mycology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; EA 7292, Fédération de Médecine Translationnelle, Faculté de Médecine, Strasbourg, France
| | - Vincent Castelain
- Médecine Intensive - Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Raphaël Clere-Jehl
- Médecine Intensive - Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg, Inserm UMR S1109, Strasbourg, France
| | - Julie Denis
- Department of Parasitology and Mycology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; EA 7292, Fédération de Médecine Translationnelle, Faculté de Médecine, Strasbourg, France
| | - Laurence Dillenseger
- Department of Neonatology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Eric Epailly
- Department of Cardiovascular Surgery, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Justine Gantzer
- Department of Oncology, Institut de Cancérologie de Strasbourg (ICANS), Strasbourg, France
| | - Blandine Guffroy
- Department of Haematology, Institut de Cancérologie de Strasbourg (ICANS), Strasbourg, France; Université de Strasbourg, Inserm UMR-S1113/IRFAC, Strasbourg, France
| | - Yves Hansmann
- Department of Infectious Diseases, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jean-Etienne Herbrecht
- Médecine Intensive - Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Valérie Letscher-Bru
- Department of Parasitology and Mycology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; EA 7292, Fédération de Médecine Translationnelle, Faculté de Médecine, Strasbourg, France
| | - Pierre Leyendecker
- Department of Radiology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Pauline Le Van Quyen
- Department of Pathology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Pierre-Olivier Ludes
- Department of Anaesthesiology, Critical Care and Perioperative Medicine, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Guillaume Morel
- Médecine Intensive - Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Bruno Moulin
- Université de Strasbourg, Inserm UMR S1109, Strasbourg, France; Department of Nephrology-Transplantation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Catherine Paillard
- Department of Paediatric Onco-Haematology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Benjamin Renaud-Picard
- Department of Respiratory Medicine and Strasbourg Lung Transplant Program, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg, Inserm UMR 1260, Strasbourg, France
| | - Anne-Claude Roche
- Department of Anaesthesiology, Critical Care and Perioperative Medicine, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Marcela Sabou
- Department of Parasitology and Mycology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; EA 7292, Fédération de Médecine Translationnelle, Faculté de Médecine, Strasbourg, France
| | - Francis Schneider
- Médecine Intensive - Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg, Inserm UMR 1121, Strasbourg, France
| | - Morgane Solis
- Université de Strasbourg, Inserm UMR S1109, Strasbourg, France; Department of Virology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Emilie Talagrand-Reboul
- Department of Bacteriology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg, Faculté de Médecine, UR 7290, Strasbourg, France
| | - Francis Veillon
- Department of Radiology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Marie-Pierre Ledoux
- Department of Haematology, Institut de Cancérologie de Strasbourg (ICANS), Strasbourg, France
| | - Célestine Simand
- Department of Haematology, Institut de Cancérologie de Strasbourg (ICANS), Strasbourg, France
| | - Raoul Herbrecht
- Department of Haematology, Institut de Cancérologie de Strasbourg (ICANS), Strasbourg, France; Université de Strasbourg, Inserm UMR-S1113/IRFAC, Strasbourg, France.
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20
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Hardick J, Shaw-Saliba K, McBryde B, Gaydos CA, Hsieh YH, Lovecchio F, Steele M, Talan D, Rothman RE. Identification of pathogens from the upper respiratory tract of adult emergency department patients at high risk for influenza complications in a pre-Sars-CoV-2 environment. Diagn Microbiol Infect Dis 2021; 100:115352. [PMID: 33639376 DOI: 10.1016/j.diagmicrobio.2021.115352] [Citation(s) in RCA: 3] [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: 12/17/2020] [Revised: 02/09/2021] [Accepted: 02/13/2021] [Indexed: 11/24/2022]
Abstract
The emergence of SARS-CoV-2 and subsequent COVID-19 pandemic highlights the morbidity and potential disease severity caused by respiratory viruses. To elucidate pathogen prevalence, etiology of coinfections and URIs from symptomatic adult Emergency department patients in a pre-SARS-CoV-2 environment, we evaluated specimens from four geographically diverse Emergency departments in the United States from 2013-2014 utilizing ePlex RP RUO cartridges (Genmark Diagnostics). The overall positivity was 30.1% (241/799), with 6.6% (16/241) coinfections. Noninfluenza pathogens from most to least common were rhinovirus/enterovirus, coronavirus, human metapneumovirus and RSV, respectively. Broad differences in disease prevalence and pathogen distributions were observed across geographic regions; the site with the highest detection rate (for both mono and coinfections) demonstrated the greatest pathogen diversity. A variety of respiratory pathogens and geographic variations in disease prevalence and copathogen type were observed. Further research is required to evaluate the clinical relevance of these findings, especially considering the SARS-CoV-2 pandemic and related questions regarding SARS-CoV-2 disease severity and the presence of co-infections.
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Affiliation(s)
- Justin Hardick
- Johns Hopkins University School of Medicine, Department of Infectious Diseases, Baltimore, MD, USA.
| | - Kathryn Shaw-Saliba
- Johns Hopkins University School of Medicine, Department of Emergency Medicine, Baltimore, MD, USA
| | - Breana McBryde
- Johns Hopkins University School of Medicine, Department of Emergency Medicine, Baltimore, MD, USA
| | - Charlotte A Gaydos
- Johns Hopkins University School of Medicine, Department of Infectious Diseases, Baltimore, MD, USA; Johns Hopkins University School of Medicine, Department of Emergency Medicine, Baltimore, MD, USA
| | - Yu-Hsiang Hsieh
- Johns Hopkins University School of Medicine, Department of Emergency Medicine, Baltimore, MD, USA
| | | | | | - David Talan
- Oliver View Medical Center, Los Angeles, CA, USA
| | - Richard E Rothman
- Johns Hopkins University School of Medicine, Department of Infectious Diseases, Baltimore, MD, USA; Johns Hopkins University School of Medicine, Department of Emergency Medicine, Baltimore, MD, USA
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21
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Abarca JC, Huerta L, Fierro NA. Antiretroviral Therapies for Human Immunodeficiency Virus and Liver Disease: Challenges and opportunities. Ann Hepatol 2021; 19:121-122. [PMID: 32138869 DOI: 10.1016/j.aohep.2020.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 02/14/2020] [Indexed: 02/06/2023]
Abstract
The post antiretroviral therapy (ART) era for human immunodeficiency virus (HIV) infection resulted in a dramatically increased proportion of deaths attributed to liver-related causes in patients with HIV treated with ART. Additionally, as patients become older as a result of effective ART, liver-related conditions and application of safe therapies are now major concerns in the setting of HIV infection.
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Affiliation(s)
- Julio C Abarca
- Department of Immunology, Biomedical Research Institute, National Autonomous University of Mexico, Mexico
| | - Leonor Huerta
- Department of Immunology, Biomedical Research Institute, National Autonomous University of Mexico, Mexico
| | - Nora A Fierro
- Department of Immunology, Biomedical Research Institute, National Autonomous University of Mexico, Mexico.
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22
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Akenten CW, Boahen KG, Marfo KS, Sarpong N, Dekker D, Struck NS, Osei-Tutu L, May J, Amuasi JH, Eibach D. Bloodstream infection with Acinetobacter baumanii in a Plasmodium falciparum positive infant: a case report. J Med Case Rep 2021; 15:46. [PMID: 33541431 PMCID: PMC7863459 DOI: 10.1186/s13256-020-02648-7] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 12/21/2020] [Indexed: 12/03/2022] Open
Abstract
Background The increasing incidence of multi-antibiotic-resistant bacterial infections, coupled with the risk of co-infections in malaria-endemic regions, complicates accurate diagnosis and prolongs hospitalization, thereby increasing the total cost of illness. Further, there are challenges in making the correct choice of antibiotic treatment and duration, precipitated by a lack of access to microbial culture facilities in many hospitals in Ghana. The aim of this case report is to highlight the need for blood cultures or alternative rapid tests to be performed routinely in malaria patients, to diagnose co-infections with bacteria, especially when symptoms persist after antimalarial treatment. Case presentation A 6-month old black female child presented to the Agogo Presbyterian Hospital with fever, diarrhea, and a 3-day history of cough. A rapid diagnostic test for malaria and Malaria microscopy was positive for P. falciparum with a parasitemia of 224 parasites/μl. The patient was treated with Intravenous Artesunate, parental antibiotics (cefuroxime and gentamicin) and oral dispersible zinc tablets in addition to intravenous fluids. Blood culture yielded Acinetobacter baumanii, which was resistant to all of the third-generation antibiotics included in the susceptibility test conducted, but sensitive to ciprofloxacin and gentamicin. After augmenting treatment with intravenous ciprofloxacin, all symptoms resolved. Conclusion Even though this study cannot confirm whether the bacterial infection was nosocomial or otherwise, the case highlights the necessity to test malaria patients for possible co-infections, especially when fever persists after parasites have been cleared from the bloodstream. Bacterial blood cultures and antimicrobial susceptibility testing should be routinely performed to guide treatment options for febril illnesses in Ghana in order to reduce inappropriate use of broad-spectrum antibiotics and limit the development of antimicrobial resistance.
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Affiliation(s)
- Charity Wiafe Akenten
- Kumasi Centre for Collaborative Research in Tropical Medicine, P.O Box PMB KNUST, Kumasi, Ghana.
| | - Kennedy Gyau Boahen
- Kumasi Centre for Collaborative Research in Tropical Medicine, P.O Box PMB KNUST, Kumasi, Ghana
| | - Kwadwo Sarfo Marfo
- Kumasi Centre for Collaborative Research in Tropical Medicine, P.O Box PMB KNUST, Kumasi, Ghana
| | - Nimako Sarpong
- Kumasi Centre for Collaborative Research in Tropical Medicine, P.O Box PMB KNUST, Kumasi, Ghana
| | - Denise Dekker
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | | | | | - Juergen May
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - John Humphrey Amuasi
- Kumasi Centre for Collaborative Research in Tropical Medicine, P.O Box PMB KNUST, Kumasi, Ghana.,School of Public Health, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Daniel Eibach
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
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23
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Rajni E, Garg VK, Bacchani D, Sharma R, Vohra R, Mamoria V, Malhotra H. Prevalence of Bloodstream Infections and their Etiology in COVID-19 Patients Admitted in a Tertiary Care Hospital in Jaipur. Indian J Crit Care Med 2021; 25:369-373. [PMID: 34045801 PMCID: PMC8138648 DOI: 10.5005/jp-journals-10071-23781] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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] [Indexed: 12/22/2022] Open
Abstract
Background World is in grip of coronavirus disease-2019 (COVID-19) pandemic right now. Majority of studies center around its epidemiological and clinical characteristics. Information regarding secondary bacterial infections is limited. This retrospective observational study was done to determine the prevalence and characteristics of bloodstream infections in COVID-19 patients admitted in a tertiary care center in Jaipur. Materials and methods All blood cultures received from COVID-19 positive patients admitted in designated COVID care ICUs and wards were included in the study. A predesigned pretested questionnaire was used to collect relevant data. Blood cultures were done using BD BACTEC™ FX40, and identification and antimicrobial susceptibility testing of isolates were done by VITEK® 2 COMPACT. Results One thousand five hundred seventy-eight (1578) COVID-19 positive patients were admitted in center during 5-month study period from whom 158 blood cultures were received. Out of these, 15 (9.4%) were positive. Median age of patients with positive blood culture was 54 years and included 10 males and 5 females. Ten (67%) patients needed intensive care in ICU. Significant correlation of blood culture positivity was found with parameters like ICU admission, presence of an indwelling device, underlying comorbidity, raised biochemical markers, and adverse clinical outcome. Conclusions Incidence of bloodstream infections is low for COVID-19 patients. Antibiotic prophylaxis needs to be used with caution, and prompt discontinuation should be done based on clinical judgment. How to cite this article Rajni E, Garg VK, Bacchani D, Sharma R, Vohra R, Mamoria V, et al. Prevalence of Bloodstream Infections and their Etiology in COVID-19 Patients Admitted in a Tertiary Care Hospital in Jaipur. Indian J Crit Care Med 2021;25(4):369-373.
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Affiliation(s)
- Ekadashi Rajni
- Department of Microbiology, Mahatma Gandhi University of Medical Sciences, Jaipur, Rajasthan, India
| | - Vishnu K Garg
- Department of Anaesthesiology, Mahatma Gandhi University of Medical Sciences, Jaipur, Rajasthan, India
| | - Daisy Bacchani
- Department of Microbiology, Mahatma Gandhi University of Medical Sciences, Jaipur, Rajasthan, India
| | - Richa Sharma
- Department of Microbiology, Mahatma Gandhi University of Medical Sciences, Jaipur, Rajasthan, India
| | - Rajat Vohra
- Department of PSM, Mahatma Gandhi University of Medical Sciences, Jaipur, Rajasthan, India
| | - Vedprakash Mamoria
- Department of Microbiology, Mahatma Gandhi University of Medical Sciences, Jaipur, Rajasthan, India
| | - Hemant Malhotra
- Department of Medical Oncology, Mahatma Gandhi University of Medical Sciences, Jaipur, Rajasthan, India
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Abstract
Purpose of review Poor outcomes in the current coronavirus disease 2019 (COVID-19) pandemic have been attributed to superadded bacterial coinfections. The World Health Organization has reported overzealous usage of broad-spectrum antibiotics during this current pandemic raising concerns of increasing antimicrobial resistance? Therefore, the knowledge of coinfection and the common pathogens during these challenging times is essential for antibiotic stewardship practices. Recent findings The incidence of reported superimposed bacterial and viral coinfections in COVID-19 patients is around 0.04 to 17%. However, more than 70% of patients have received broad-spectrum antibiotics. The presence of a simultaneous coinfection can be suspected in patients with neutrophilic lymphocytosis and elevated procalcitonin in the setting of COVID-19. Multiplex polymerase chain reaction (PCR) panels, with its short turnaround time, aid in the definitive diagnosis of possible coinfection. Acinetobacter baumanii, Mycoplasma pneumonia, influenza virus, Aspergillus, Candida, etc., are commonly implicated pathogens. Summary Rapid characterization of coinfection and avoidance of overzealous use of broad-spectrum antibiotics in COVID-19 patients are the key to prevent antibiotic resistance during this pandemic. How to cite this article Kayarat B, Khanna P, Sarkar S. Superadded Coinfections and Antibiotic Resistance in the Context of COVID-19: Where do We Stand? Indian J Crit Care Med 2021;25(6):699–703.
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Affiliation(s)
- Bhavana Kayarat
- Department of Anaesthesiology, Pain Medicine and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Puneet Khanna
- Department of Anaesthesiology, Pain Medicine and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Soumya Sarkar
- Department of Anaesthesiology, Pain Medicine and Critical Care, All India Institute of Medical Sciences, New Delhi, India
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25
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Chisu V, Loi F, Foxi C, Chessa G, Masu G, Rolesu S, Masala G. Coexistence of Tick-Borne Pathogens in Ticks Collected from their Hosts in Sardinia: an Update. Acta Parasitol 2020; 65:999-1004. [PMID: 32557083 DOI: 10.1007/s11686-020-00240-z] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 06/04/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE In recent decades, the incidence and distribution of tick-borne diseases have increased worldwide, attracting the attention of both clinicians and veterinarians. In Sardinia, notifiable tick-borne diseases are spreading and Mediterranean spotted fever (MSF) rickettsiosis continues to be endemic with an incidence of 10/10,000 inhabitants per year. Furthermore, ticks can transfer more than one pathogen after a single blood meal from a coinfected host or after multiple feeding on different infected hosts. The aim of this study was to update information on ticks and tick-borne diseases, focusing also on the presence of coinfection in Sardinian ticks. METHODS The presence of protozoan (Theileria and Babesia species) and bacterial pathogens (Rickettsia spp., Anaplasma spp., Ehrlichia canis, Chlamydia spp., Bartonella spp., and Coxiella burnetii) was evaluated in 230 ticks collected from different hosts in Sardinia. RESULTS PCR and sequencing analyses highlighted that the 59% of ticks were infected with at least one pathogen while the 15% resulted in coinfection by double and triple pathogens. Among the double co-infections, those of E. canis/C. burnetii, Babesia sp. Anglona/Ch. psittaci and Babesia sp. Anglona/C. burnetii revealed a statistically significant index of coinfection. CONCLUSION This study identifies new pathogens in Sardinian ticks and updates the information about tick-borne diseases in the island. We also provide new results on the presence of coinfections in collected ticks. The knowledge about the diversity of ticks and tick-borne diseases circulating in Sardinia is a necessary step toward implementing effective tick-borne disease prevention and control programs.
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Affiliation(s)
- Valentina Chisu
- Istituto Zooprofilattico Sperimentale Della Sardegna "G. Pegreffi", Sassari, Italy.
| | - Federica Loi
- OEVR-Osservatorio Epidemiologico Veterinario Regionale Della Sardegna, Cagliari, Italy
| | - Cipriano Foxi
- Istituto Zooprofilattico Sperimentale Della Sardegna "G. Pegreffi", Sassari, Italy
| | - Giovanna Chessa
- Istituto Zooprofilattico Sperimentale Della Sardegna "G. Pegreffi", Sassari, Italy
| | - Gabriella Masu
- Istituto Zooprofilattico Sperimentale Della Sardegna "G. Pegreffi", Sassari, Italy
| | - Sandro Rolesu
- OEVR-Osservatorio Epidemiologico Veterinario Regionale Della Sardegna, Cagliari, Italy
| | - Giovanna Masala
- Istituto Zooprofilattico Sperimentale Della Sardegna "G. Pegreffi", Sassari, Italy
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Baraboutis IG, Gargalianos P, Aggelonidou E, Adraktas A; Collaborators. Initial Real-Life Experience from a Designated COVID-19 Centre in Athens, Greece: a Proposed Therapeutic Algorithm. ACTA ACUST UNITED AC 2020;:1-5. [PMID: 32838133 DOI: 10.1007/s42399-020-00324-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2020] [Indexed: 01/07/2023]
Abstract
We report our initial experience with the management of a mixed group of patients with COVID-19 infection, admitted and treated in a designated COVID-19 centre in the Athens Metropolitan area over a 4-week period. The SARS-CoV-2 pandemic presented a huge challenge to the Greek National Healthcare System and healthcare workers. Their response so far has been miraculously effective. Since there are essentially no therapeutic guidelines yet for this disease, we relied mainly on our medical intuition, our empathy for our patients and team work to do the best possible for 49 people with this infection. We present the therapeutic algorithm we gradually developed (on the job) and applied in our patients, based on continuous creative brainstorming and monitoring of the literature.
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Bolumburu C, Zamora V, Muñoz-Algarra M, Portero-Azorín F, Escario JA, Ibáñez-Escribano A. Trichomoniasis in a tertiary hospital of Madrid, Spain (2013-2017): prevalence and pregnancy rate, coinfections, metronidazole resistance, and endosymbiosis. Parasitol Res 2020; 119:1915-1923. [PMID: 32405804 DOI: 10.1007/s00436-020-06688-2] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 04/07/2020] [Indexed: 01/31/2023]
Abstract
Trichomoniasis is the most prevalent curable sexually transmitted infection (STI) worldwide and a risk factor for the acquisition of other STIs and adverse pregnancy outcomes. The objectives of this study were to determine the prevalence of T. vaginalis and related coinfections in women attending a third-level hospital of Madrid (Spain). A retrospective study of 24,173 vaginal exudates from women with suspected vaginitis was conducted between 2013 and 2017. Likewise, among T. vaginalis positive samples, co-occurrence with gonorrhea, chlamydia, syphilis, VIH, Mycoplasma hominis, and Ureaplasma urealyticum was checked. Moreover, seven T. vaginalis isolates from 2017 were randomly collected for endobionts, drug resistance, and microsatellite (MS) instability determinations. The prevalence of T. vaginalis was 0.8% between 2013 and 2017. Less than 20% of patients with trichomoniasis were submitted to a complete screening for other genital pathogens. From that, two patients were coinfected with chlamydia and three with syphilis. Surprisingly, 6.4% of positive samples were diagnosed among pregnant women, showing an alarming increase from 3.2% (2014) to 10% (2017). Among the isolates randomly analyzed, five carried T. vaginalis virus, five harbored mycoplasmas, and one was metronidazole-resistant. The molecular genotyping showed a high variability in the three MS evaluated. To our knowledge, this is the first study in Spain that evaluates the prevalence of trichomoniasis in general and pregnant population and includes biomolecular determinations. These results warn about the increasing prevalence and highlight the importance of including T. vaginalis detection in routine gynecological revisions with special emphasis on childbearing age women and patients with previous STIs.
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Affiliation(s)
- Celia Bolumburu
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - Vega Zamora
- Servicio de Microbiología y Parasitología Clínica, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - María Muñoz-Algarra
- Servicio de Microbiología y Parasitología Clínica, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - Francisca Portero-Azorín
- Servicio de Microbiología y Parasitología Clínica, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - José Antonio Escario
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - Alexandra Ibáñez-Escribano
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain.
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Abstract
Torque teno viruses (TTVs) are small, ubiquitous, viruses with a highly diverse, single-stranded, negative sense DNA genome and wide host range. They are detected at high rates in both healthy and diseased individuals and are considered a significant part of the mammalian virome. Similar to human TTVs, swine TTVs (TTSuVs) are epidemiologically linked to several coinfections including porcine circovirus types 2 and 3 and the porcine reproductive and respiratory disease syndrome virus. Experimental infection of gnotobiotic pigs with TTSuVs resulted in lesions in multiple organs and exacerbation of coinfections, making TTSuVs the only members of the Anelloviridae family with experimental evidence for pathogenicity. However, due to the lack of reliable cell culture and animal models, mechanistic studies on viral immunity and pathogenesis are limited. The objective of this review is to summarize the current status of knowledge regarding the biology, detection, pathogenesis and public health significance of TTSuVs, while identifying gaps in knowledge which limit the field.
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Affiliation(s)
- Brett Webb
- Veterinary Diagnostic Laboratory, North Dakota State University, Fargo, ND, United States
| | - Agm Rakibuzzaman
- Department of Microbiological Sciences, North Dakota State University, Fargo, ND, United States
| | - Sheela Ramamoorthy
- Department of Microbiological Sciences, North Dakota State University, Fargo, ND, United States.
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Brai A, Riva V, Saladini F, Zamperini C, Trivisani CI, Garbelli A, Pennisi C, Giannini A, Boccuto A, Bugli F, Martini M, Sanguinetti M, Zazzi M, Dreassi E, Botta M, Maga G. DDX3X inhibitors, an effective way to overcome HIV-1 resistance targeting host proteins. Eur J Med Chem 2020; 200:112319. [PMID: 32446036 DOI: 10.1016/j.ejmech.2020.112319] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 01/29/2020] [Accepted: 04/06/2020] [Indexed: 12/19/2022]
Abstract
The huge resources that had gone into Human Immunodeficiency virus (HIV) research led to the development of potent antivirals able to suppress viral load in the majority of treated patients, thus dramatically increasing the life expectancy of people living with HIV. However, life-long treatments could result in the emergence of drug-resistant viruses that can progressively reduce the number of therapeutic options, facilitating the progression of the disease. In this scenario, we previously demonstrated that inhibitors of the human DDX3X helicase can represent an innovative approach for the simultaneous treatment of HIV and other viral infections such as Hepatitis c virus (HCV). We reported herein 6b, a novel DDX3X inhibitor that thanks to its distinct target of action is effective against HIV-1 strains resistant to currently approved drugs. Its improved in vitro ADME properties allowed us to perform preliminary in vivo studies in mice, which highlighted optimal biocompatibility and an improved bioavailability. These results represent a significant advancement in the development of DDX3X inhibitors as a novel class of broad spectrum and safe anti-HIV-1 drugs.
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Affiliation(s)
- Annalaura Brai
- Dipartimento Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Via A. De Gasperi 2, I-53100, Siena, Italy
| | - Valentina Riva
- Istituto di Genetica Molecolare "Luigi Luca Cavalli - Sforza", IGM-CNR, Via Abbiategrasso 207, I-27100, Pavia, Italy
| | - Francesco Saladini
- Dipartimento di Biotecnologie Mediche, Università degli Studi di Siena, I-53100, Siena, Italy
| | - Claudio Zamperini
- Dipartimento Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Via A. De Gasperi 2, I-53100, Siena, Italy
| | - Claudia Immacolata Trivisani
- Dipartimento Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Via A. De Gasperi 2, I-53100, Siena, Italy
| | - Anna Garbelli
- Istituto di Genetica Molecolare "Luigi Luca Cavalli - Sforza", IGM-CNR, Via Abbiategrasso 207, I-27100, Pavia, Italy
| | - Carla Pennisi
- Istituto di Genetica Molecolare "Luigi Luca Cavalli - Sforza", IGM-CNR, Via Abbiategrasso 207, I-27100, Pavia, Italy
| | - Alessia Giannini
- Dipartimento di Biotecnologie Mediche, Università degli Studi di Siena, I-53100, Siena, Italy
| | - Adele Boccuto
- Dipartimento di Biotecnologie Mediche, Università degli Studi di Siena, I-53100, Siena, Italy
| | - Francesca Bugli
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Dipartimento di Scienze di Laboratorio e Infettivologiche, I-00168, Roma, Italy; Istituto di Microbiologia, Università Cattolica del SC, L.go F. Vito 1, I-00168, Roma, Italy
| | - Maurizio Martini
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Servizio di Istopatologia e Citodiagnosi, Rome, Italy; Istituto di Patologia, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Maurizio Sanguinetti
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Dipartimento di Scienze di Laboratorio e Infettivologiche, I-00168, Roma, Italy; Istituto di Microbiologia, Università Cattolica del SC, L.go F. Vito 1, I-00168, Roma, Italy
| | - Maurizio Zazzi
- Dipartimento di Biotecnologie Mediche, Università degli Studi di Siena, I-53100, Siena, Italy
| | - Elena Dreassi
- Dipartimento Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Via A. De Gasperi 2, I-53100, Siena, Italy
| | - Maurizio Botta
- Dipartimento Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Via A. De Gasperi 2, I-53100, Siena, Italy; Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, BioLife Science Building, Suite 333, 1900 N 12th Street, Philadelphia, PA, 19122, USA.
| | - Giovanni Maga
- Istituto di Genetica Molecolare "Luigi Luca Cavalli - Sforza", IGM-CNR, Via Abbiategrasso 207, I-27100, Pavia, Italy.
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Miyabe FM, Ribeiro J, Alfieri AF, Alfieri AA. Detection of canine kobuvirus RNA in diarrheic fecal samples of dogs with parvoviruses. Braz J Microbiol 2019; 50:871-874. [PMID: 31140097 PMCID: PMC6863268 DOI: 10.1007/s42770-019-00095-1] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 05/20/2019] [Indexed: 12/11/2022] Open
Abstract
Canine kobuvirus (CaKV) is a member of the Picornaviridae family and the Kobuvirus genus. CaKV was first described in fecal samples from diarrheic dogs in the USA in 2011, with subsequent reports in the UK, Italy, South Korea, China, Tanzania, and Japan. CaKV is frequently identified in feces of animals with or without clinical signs of gastroenteritis. The present study investigated the presence of CaKV in fecal samples from 53 diarrheic dogs from Londrina, southern Brazil. Using a RT-PCR assay, CaKV RNA was identified in three dogs, resulting in an overall occurrence rate of 5.7%. In addition, coinfection with canine parvovirus subtype 2b was detected in all CaKV-positive diarrheic fecal samples. Using a phylogenetic analysis based on the VP1 gene sequence, the Brazilian CaKV field strains were found to be very similar to a previously identified CaKV strain from Brazil that was found in the tissue of a puppy and were also found to be clustered with other CaKV strains detected worldwide and other kobuvirus strains identified in mouse, feline, and human hosts.
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Affiliation(s)
- Flavia Megumi Miyabe
- Laboratory of Animal Virology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid - Campus Universitário, PO Box 10011, Londrina, PR, 86057-970, Brazil.,Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid - Campus Universitário, PO Box 10011, Londrina, PR, 86057-970, Brazil
| | - Juliane Ribeiro
- Laboratory of Animal Virology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid - Campus Universitário, PO Box 10011, Londrina, PR, 86057-970, Brazil.,Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid - Campus Universitário, PO Box 10011, Londrina, PR, 86057-970, Brazil
| | - Alice Fernandes Alfieri
- Laboratory of Animal Virology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid - Campus Universitário, PO Box 10011, Londrina, PR, 86057-970, Brazil.,Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid - Campus Universitário, PO Box 10011, Londrina, PR, 86057-970, Brazil
| | - Amauri Alcindo Alfieri
- Laboratory of Animal Virology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid - Campus Universitário, PO Box 10011, Londrina, PR, 86057-970, Brazil. .,Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid - Campus Universitário, PO Box 10011, Londrina, PR, 86057-970, Brazil.
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Abstract
ABSTRACTBackground: Human Immunodeficiency Virus, syphilis and Hepatitis B Virus are major global public health problems, they are sexually transmitted infections with overlapping modes of transmission and affected populations. Objective: The aim of this study is to assess the seroprevalence of HIV 1, hepatitis B virus and syphilis coinfections among newly diagnosed HIV individuals aged 16 to 65 years, initiating on antiretroviral therapy, in Mkushi, Zambia. Methods: A total number of 126 sera were collected from HIV 1 infected patients attending Mkushi district hospital/ART clinic for antiretroviral therapy initiation. Hepatitis B surface antigen test and serologic test for syphilis were conducted between March and May 2018. Results: Of the 126 participants (out of 131 enrollments), Hepatitis B surface antigen (HBsAg) was detected with a prevalence of 9.5% among newly diagnosed HIV infected patients, while that of syphilis was as high as 40.5% in this same population group. Three patients recorded HIV coinfections with both syphilis and hepatitis B virus (2.4%) at the same time. After analysis, the results indicate that there was no significant association between gender for both dependent variables: HIV/syphilis or HIV/hepatitis B virus coinfections (alpha significance level > 0.05). Those who had a history of syphilis infection in the past were more likely than those who had none to be HIV-syphilis coinfected (53.6% vs 34%, respectively; odd ratio [OR] 2.236; 95% confidence interval [CI] 1.045 - 4.782). Conclusion: The high prevalence rates for HIV, HBV, and syphilis coinfections strongly indicate the need for HBV and syphilis screening for HIV infected individuals. Furthermore, the high number of patients previously treated for syphilis who retest positive for syphilis in this study calls for use of the Venereal Disease Research Laboratory test to identify true syphilis infection (titers ≥ 1:8 dilutions, strongly suggestive).
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Affiliation(s)
| | - Theresa Chungu
- ART Department, Mkushi District Hospital, Mkushi, Zambia
| | - Chisali Lusale
- ART Department, Mkushi District Hospital, Mkushi, Zambia
- Administration Department, Mkushi District Hospital, Mkushi, Zambia
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Abstract
Background: Human immunodeficiency virus, syphilis and hepatitis B virus (HBV) are major global public health problems. They are sexually transmitted diseases with overlapping modes of transmission and affected populations. The aim of this study is to assess the seroprevalence of HIV 1, hepatitis B virus and syphilis coinfections among newly diagnosed HIV individuals aged 16 to 65 years, initiating on antiretroviral therapy, in Mkushi, Zambia. Methods: A total number of 126 sera were collected from HIV 1 infected patients attending Mkushi district hospital/ART clinic for antiretroviral therapy initiation. Hepatitis B surface antigen test and serologic test for syphilis were conducted between March and May 2018. Results: Of the 126 participants, hepatitis B surface antigen (HBsAg) was detected with a prevalence of 9.5% among newly diagnosed HIV infected patients, while that of syphilis was as high as 40.5% in this same population group. Three patients recorded HIV coinfections with both syphilis and hepatitis B virus (2.4%) at the same time. After analysis, the results indicate that there was no significant association between gender for both dependent variables: HIV/syphilis or HIV/hepatitis B virus coinfections (alpha significance level > 0.05). Those who had a history of syphilis infection in the past were more likely than those who had none to be HIV-syphilis coinfected (53.6% vs 34%, respectively; odd ratio [OR] 2.236; 95% confidence interval [CI] 1.045 - 4.782). Conclusion: The high prevalence rates for HIV, HBV, and syphilis coinfections strongly indicate the need for HBV and syphilis screening for HIV infected individuals. Furthermore, the high number of patients previously treated for syphilis who retest positive for syphilis in this study calls for use of the Venereal Disease Research Laboratory test to identify true syphilis infection (titers ≥ 1:8 dilutions, strongly suggestive).
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Affiliation(s)
| | - Theresa Chungu
- ART Department, Mkushi District Hospital, Mkushi, Zambia
| | - Chisali Lusale
- ART Department, Mkushi District Hospital, Mkushi, Zambia
- Administration Department, Mkushi District Hospital, Mkushi, Zambia
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Wen X, Huang Q, Tao H, Zou W, Gao M, Guo H, Yao X, Cui D, Wang X. Clinical characteristics and viral etiologies of outpatients with acute respiratory infections in Huzhou of China: a retrospective study. BMC Infect Dis 2019; 19:32. [PMID: 30621623 PMCID: PMC6325799 DOI: 10.1186/s12879-018-3668-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 04/10/2018] [Accepted: 12/28/2018] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Viruses are commonly found in patients with acute respiratory infections (ARIs). However, the viral etiologies and clinical characteristics of outpatients with ARIs are poorly understood in China. Here, we identified the viral etiologies in outpatients with ARIs in Huzhou, China. RESULTS Our results indicated that of 426 outpatients, 246 were positive for viruses. Of them, 221 were positive for a single virus, including influenza A, which comprised H3N2 (28.5%) and pandemic H1N1 (2009) (19.0%), enterovirus (10.4%), and influenza B (8.6%). Other single viruses were detected at less than 8.0%. Twenty-five patients were positively coinfected with two viruses. The prevalent viruses in coinfections were rhinovirus and H3N2 virus (28.0%). Viruses were major pathogens in young children (< 5 years) (75.0%). Coinfections were prevalent in older adults (11.9%) and young children (9.5%). Virus-positive outpatients presented higher temperatures and more sore throat, fatigue and shortness of breath than virus-negative outpatients. ARIs and most virus detections peaked during the winter, but enteroviruses emerged between April and September. CONCLUSION Viruses are major agents of ARIs among outpatients in Huzhou, China. There was a variation in the distribution of viruses across different age groups and seasons. These findings are beneficial for planning prevention and treatment services for outpatients with ARIs.
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Affiliation(s)
- Xiaohong Wen
- The First People's Hospital Affiliated to Huzhou University, Huzhou, 313000, China
| | - Qiuling Huang
- Department of Clinical Laboratory, Huzhou Central Hospital, Huzhou, 313000, China
| | - Hong Tao
- Department of Laboratory & Pharmacy, Suzhou Vocational Health College, Suzhou, 215009, China
| | - Weihua Zou
- Department of Clinical Laboratory, Huzhou Central Hospital, Huzhou, 313000, China
| | - Min Gao
- Department of Clinical Laboratory, Huzhou Central Hospital, Huzhou, 313000, China
| | - Huihui Guo
- The First People's Hospital Affiliated to Huzhou University, Huzhou, 313000, China
| | - Xing Yao
- Department of Clinical Laboratory, Huzhou Central Hospital, Huzhou, 313000, China
| | - Dawei Cui
- Department of Blood Transfusion, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China.
| | - Xiang Wang
- The First People's Hospital Affiliated to Huzhou University, Huzhou, 313000, China.
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Raina S, Raina RK, Agarwala N, Raina SK, Sharma R. Coinfections as an aetiology of acute undifferentiated febrile illness among adult patients in the sub-Himalayan region of north India. J Vector Borne Dis 2018; 55:130-136. [PMID: 30280711 DOI: 10.4103/0972-9062.242560] [Citation(s) in RCA: 7] [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: 11/04/2022] Open
Abstract
Background & objectives In India, certain geographic regions witness simultaneous outbreaks of two or more diseases like scrub typhus, dengue fever, malaria, leptospirosis and chikungunya during monsoon and post-monsoon period, sharing common indication of acute febrile illness. The objective of the present study was to assess the prevalence of coinfections among patients with acute undifferentiated fevers (AUF) admitted in a tertiary care hospital in the northern hilly state of Himachal Pradesh, India. Methods This was a hospital based open cohort study conducted over a period of two months (September and October) in 2016. All the patients above the age of 18 yr admitted in medical wards and fulfilling the definition of AUF were included. The patients diagnosed with dual infections were the subjects of the study. Standard guidelines were used for case definitions of scrub typhus, dengue, chikungunya, malaria and leptospirosis. Results Dual infections were noted in 16 patients admitted with AUF. The most common coinfection was scrub typhus and dengue, reported in 10 patients. Scrub typhus and leptospirosis coinfection was observed in three patients. Dengue and chikungunya was observed in one patient. Scrub typhus, dengue and vivax malaria was detected in one patient. Scrub typhus and vivax malaria was detected in one patient. Out of the 10 cases positive for both scrub and dengue, four had no history of travel outside Himachal Pradesh. All three cases positive for both scrub and leptospirosis were indigenous without any history of travel outside Kangra, Himachal Pradesh. The outcome of all the patients was with full recovery. Interpretation & conclusion The study established the presence of coinfections (mainly dengue fever and leptospirosis) as a cause of AUF in the study area, which is a nonendemic region. The role of easily available and widely performed serological tests in the aetiological diagnosis of AUF is significant. Studies are required to determine the normal titres in the local population before using the imported commercially available serological tests in the diagnosis of AUF.
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Affiliation(s)
- Sujeet Raina
- Department of Medicine, Dr Rajendra Prasad Government Medical College, Kangra, Himachal Pradesh, India
| | - Rashmi Kaul Raina
- Department of Pathology, Dr Rajendra Prasad Government Medical College, Kangra, Himachal Pradesh, India
| | - Niraj Agarwala
- Department of Medicine, Dr Rajendra Prasad Government Medical College, Kangra, Himachal Pradesh, India
| | - Sunil Kumar Raina
- Department of Community Medicine, Dr Rajendra Prasad Government Medical College, Kangra, Himachal Pradesh, India
| | - Rajesh Sharma
- Department of Medicine, Dr Rajendra Prasad Government Medical College, Kangra, Himachal Pradesh, India
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Bhanot P, Parveen N. Investigating disease severity in an animal model of concurrent babesiosis and Lyme disease. Int J Parasitol 2019; 49:145-51. [PMID: 30367867 DOI: 10.1016/j.ijpara.2018.06.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/11/2018] [Accepted: 06/19/2018] [Indexed: 02/04/2023]
Abstract
The incidence of babesiosis, Lyme disease and other tick-borne diseases has increased steadily in Europe and North America during the last five decades. Babesia microti is transmitted by species of Ixodes, the same ticks that transmit the Lyme disease-causing spirochete, Borrelia burgdorferi. B. microti can also be transmitted through transfusion of blood products and is the most common transfusion-transmitted infection in the U.S.A. Ixodes ticks are commonly infected with both B. microti and B. burgdorferi, and are competent vectors for transmitting them together into hosts. Few studies have examined the effects of coinfections on humans and they had somewhat contradictory results. One study linked coinfection with B. microti to a greater number of symptoms of overall disease in patients, while another report indicated that B. burgdorferi infection either did not affect babesiosis symptoms or decreased its severity. Mouse models of infection that manifest pathological effects similar to those observed in human babesiosis and Lyme disease offer a unique opportunity to thoroughly investigate the effects of coinfection on the host. Lyme disease has been studied using the susceptible C3H mouse infection model, which can also be used to examine B. microti infection to understand pathological mechanisms of human diseases, both during a single infection and during coinfections. We observed that high B. microti parasitaemia leads to low haemoglobin levels in infected mice, reflecting the anaemia observed in human babesiosis. Similar to humans, B. microti coinfection appears to enhance the severity of Lyme disease-like symptoms in mice. Coinfected mice have lower peak B. microti parasitaemia compared to mice infected with B. microti alone, which may reflect attenuation of babesiosis symptoms reported in some human coinfections. These findings suggest that B. burgdorferi coinfection attenuates parasite growth while B. microti presence exacerbates Lyme disease-like symptoms in mice.
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36
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Birdsell DN, Özsürekci Y, Rawat A, Aycan AE, Mitchell CL, Sahl JW, Johansson A, Colman RE, Schupp JM, Ceyhan M, Keim PS, Wagner DM. Coinfections identified from metagenomic analysis of cervical lymph nodes from tularemia patients. BMC Infect Dis 2018; 18:319. [PMID: 29996780 PMCID: PMC6042416 DOI: 10.1186/s12879-018-3218-2] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 06/26/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Underlying coinfections may complicate infectious disease states but commonly go unnoticed because an a priori clinical suspicion is usually required so they can be detected via targeted diagnostic tools. Shotgun metagenomics is a broad diagnostic tool that can be useful for identifying multiple microbes simultaneously especially if coupled with lymph node aspirates, a clinical matrix known to house disparate pathogens. The objective of this study was to analyze the utility of this unconventional diagnostic approach (shotgun metagenomics) using clinical samples from human tularemia cases as a test model. Tularemia, caused by the bacterium Francisella tularensis, is an emerging infectious disease in Turkey. This disease commonly manifests as swelling of the lymph nodes nearest to the entry of infection. Because swollen cervical nodes are observed from many different types of human infections we used these clinical sample types to analyze the utility of shotgun metagenomics. METHODS We conducted an unbiased molecular survey using shotgun metagenomics sequencing of DNA extracts from fine-needle aspirates of neck lymph nodes from eight tularemia patients who displayed protracted symptoms. The resulting metagenomics data were searched for microbial sequences (bacterial and viral). RESULTS F. tularensis sequences were detected in all samples. In addition, we detected DNA of other known pathogens in three patients. Both Hepatitis B virus (HBV) and Human Parvovirus B-19 were detected in one individual and Human Parvovirus B-19 alone was detected in two other individuals. Subsequent PCR coupled with Sanger sequencing verified the metagenomics results. The HBV status was independently confirmed via serological diagnostics, despite evading notice during the initial assessment. CONCLUSION Our data highlight that shotgun metagenomics of fine-needle lymph node aspirates is a promising clinical diagnostic strategy to identify coinfections. Given the feasibility of the diagnostic approach demonstrated here, further steps to promote integration of this type of diagnostic capability into mainstream clinical practice are warranted.
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Affiliation(s)
- D N Birdsell
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA.
| | - Y Özsürekci
- Department of Pediatric Infectious Disease Unit in Ankara, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - A Rawat
- Translational Genomics Research Institute, Flagstaff, AZ, USA.,Present Address: Division of Biomedical Informatics Research, Sidra Medical & Research Center, Doha, Qatar
| | - A E Aycan
- Department of Pediatric Infectious Disease Unit in Ankara, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - C L Mitchell
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA.,Present Address: Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - J W Sahl
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - A Johansson
- Department of Clinical Microbiology and Laboratory for Molecular Infection Medicine Sweden, Umeå University, Umeå, Sweden
| | - R E Colman
- Translational Genomics Research Institute, Flagstaff, AZ, USA.,Present address: Department of Medicine, University of California, San Diego, California, USA
| | - J M Schupp
- Translational Genomics Research Institute, Flagstaff, AZ, USA
| | - M Ceyhan
- Department of Pediatric Infectious Disease Unit in Ankara, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - P S Keim
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA.,Translational Genomics Research Institute, Flagstaff, AZ, USA
| | - D M Wagner
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
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Asmah RH, Blankson HNA, Seanefu KA, Obeng-Nkrumah N, Awuah-Mensah G, Cham M, Ayeh-Kumi PF. Trichomoniasis and associated co-infections of the genital tract among pregnant women presenting at two hospitals in Ghana. BMC Womens Health 2017; 17:130. [PMID: 29237446 PMCID: PMC5729291 DOI: 10.1186/s12905-017-0489-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 02/22/2017] [Accepted: 11/30/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Trichomonas vaginalis (TV) infection is the most prevalent non-viral sexually transmitted pathogen worldwide. Among pregnant women, the infection may cause adverse birth outcomes such as premature rupture of membranes and premature labour. In view of the paucity of information relating to TV among Ghanaian pregnant women, this study investigated its prevalence and associated co-infections among pregnant women. METHODS High vaginal swabs were obtained from 99 pregnant women using sterile cotton swab sticks. Wet preparation, Grams staining, culturing, coagulase and sensitivity testing were carried out to determine the presence of TV and associated microorganisms. RESULTS The prevalence of TV among the pregnant women was found to be 20.2% (n = 20). Concurring with Trichomoniasis, 75% (n = 15) of participants had other infections such as Candida with prevalence of 53% (n = 8), Proteus infection - 20% (n = 3), Streptococcus infection - 13% (n = 2) and other GNRs and Gonococci having 7% each (n = 1). Moreover, there was 86.9% (n = 86) prevalence of Staphylococcus spp. among study participants. There was statistically significant correlation between TV and Gonococci infection at a correlation co-efficient of 0.107 (P < 0.05) as well as significant correlation between TV and Proteus spp. at a correlation co-efficient of 0.189 (P < 0.05). TV infection was high (60%) among the most sexually active age group (19 to 29 yrs). CONCLUSION There was 20.2% prevalence of TV among the pregnant women presenting at the hospitals, with Gonococci and Proteus infections being statistically significant associated infections.
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Affiliation(s)
- Richard H. Asmah
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Harriet N. A. Blankson
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Kekeli A. Seanefu
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Noah Obeng-Nkrumah
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Georgina Awuah-Mensah
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
| | | | - Patrick F. Ayeh-Kumi
- Department of Microbiology, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
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Custer SS. Management of Coinfections in Patients with Human Immunodeficiency Virus. Nurs Clin North Am 2017; 53:83-96. [PMID: 29362063 DOI: 10.1016/j.cnur.2017.10.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In addition to chronic use of antiretrovirals to maintain suppression of human immunodeficiency virus (HIV), many persons living with HIV are coinfected with tuberculosis, hepatitis B, or hepatitis C. These coinfections can be successfully treated or managed alongside HIV infection. Clinicians should follow practice guidelines to appropriately screen patients with HIV for these coinfections and initiate treatment when necessary. The most significant concern when treating any of these coinfections is to avoid drug-drug interactions with the patient's antiretrovirals. Several excellent practice guidelines exist for treatment of these common HIV coinfections.
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Affiliation(s)
- Sabra S Custer
- College of Nursing, University of South Carolina, 1601 Greene Street, Columbia, SC 29208, USA.
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39
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Abstract
The improvement in antiretroviral therapy has significantly impacted the lives of people living with human immunodeficiency virus (HIV). In high-income countries, HIV deaths are predominated by liver disease consequent to viral hepatitis coinfection, alcohol, and nonalcoholic fatty liver disease. Published liver pathology findings have shifted from being predominated by opportunistic infections to the metabolic effects of HIV and antiretroviral therapy as well as drug-induced liver injuries. Differences remain between high-income and low-income countries, where opportunistic infections and immune reconstitution syndromes, dominate findings.
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Affiliation(s)
- Mark W Sonderup
- Division of Hepatology, Department of Medicine, Groote Schuur Hospital, University of Cape Town, Observatory, Cape Town 7925, South Africa.
| | - Helen Cecilia Wainwright
- Department of Anatomical Pathology, National Health Laboratory Services, D7 Groote Schuur Hospital, University of Cape Town, Observatory, Cape Town 7925, South Africa
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40
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Sommer MF, Zdravković N, Vasić A, Grimm F, Silaghi C. Gastrointestinal parasites in shelter dogs from Belgrade, Serbia. Vet Parasitol Reg Stud Reports 2017; 7:54-57. [PMID: 31014658 DOI: 10.1016/j.vprsr.2017.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 01/10/2017] [Indexed: 11/24/2022]
Abstract
It is well known that dog shelters are a common source for parasitic infections in different countries worldwide. The present study was conducted in order to determine the prevalence of intestinal parasites and the frequency of polyparasitism in dogs living in two private shelters in Belgrade, Serbia. For this purpose, 134 faecal samples were examined for gastrointestinal parasites with the merthiolate-iodine-formalin concentration (MIFC)-method as well as for Giardia-coproantigen with an enzyme-linked-immunosorbent assay (ELISA). Taeniid eggs were identified by PCR and sequence analysis. Overall, at least one of nine different endoparasites was detected in 75.4% (101/134) of the dogs. Giardia duodenalis coproantigen was found most frequently (45.5%; 61/134), followed by eggs of Ancylostomatidae (41.0%; 55/134), oocysts of Hammondia/Neospora (11.2%; 15/134), eggs of Toxascaris leonina (9.7%; 13/134), oocysts of Isospora canis (8.2%; 11/134), eggs of Trichuris vulpis (6.7%; 9/134), cysts of Sarcocystis spp. (4.5%; 6/134), eggs of Toxocara canis (3.0%; 4/134) and eggs of Taenia spp. (1.5%; 2/134). The results of the study confirm a high parasitic burden in the investigated shelter dogs and call for an effective deworming program including an improved hygiene management in the affected facilities.
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Affiliation(s)
- Marie Franziska Sommer
- Comparative Tropical Medicine and Parasitology, Ludwig-Maximilians-University, Munich, Germany.
| | - Nemanja Zdravković
- Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
| | - Ana Vasić
- Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
| | - Felix Grimm
- Institute of Parasitology, University of Zurich, Zurich, Switzerland
| | - Cornelia Silaghi
- Comparative Tropical Medicine and Parasitology, Ludwig-Maximilians-University, Munich, Germany
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Beams AB, Toth DJA, Khader K, Adler FR. Harnessing Intra-Host Strain Competition to Limit Antibiotic Resistance: Mathematical Model Results. Bull Math Biol 2016; 78:1828-1846. [PMID: 27670431 DOI: 10.1007/s11538-016-0201-1] [Citation(s) in RCA: 4] [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: 01/25/2016] [Accepted: 08/25/2016] [Indexed: 11/24/2022]
Abstract
Antibiotic overuse has promoted the spread of antibiotic resistance. To compound the issue, treating individuals dually infected with antibiotic-resistant and antibiotic-vulnerable strains can make their infections completely resistant through competitive release. We formulate mathematical models of transmission dynamics accounting for dual infections and extensions accounting for lag times between infection and treatment or between cure and ending treatment. Analysis using the Next-Generation Matrix reveals how competition within hosts and the costs of resistance determine whether vulnerable and resistant strains persist, coexist, or drive each other to extinction. Invasion analysis predicts that treatment of dually infected cases will promote resistance. By varying antibiotic strength, the models suggest that physicians have two ways to achieve a particular resistance target: prescribe relatively weak antibiotics to everyone infected with an antibiotic-vulnerable strain or give more potent prescriptions to only those patients singly infected with the vulnerable strain after ruling out the possibility of them being dually infected with resistance. Through selectivity and moderation in antibiotic prescription, resistance might be limited.
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Affiliation(s)
- Alexander B Beams
- Department of Mathematics, University of Utah, Salt Lake City, UT, USA.
| | - Damon J A Toth
- Informatics, Decision Enhancement, and Analytical Sciences (IDEAS) 2.0 Center, VA Salt Lake City Health Care System, Salt Lake City, UT, USA.,Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Karim Khader
- Informatics, Decision Enhancement, and Analytical Sciences (IDEAS) 2.0 Center, VA Salt Lake City Health Care System, Salt Lake City, UT, USA.,Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Frederick R Adler
- Department of Mathematics, University of Utah, Salt Lake City, UT, USA.,Department of Biology, University of Utah, Salt Lake City, UT, USA
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Puglia M, Stasi C, Da Frè M, Voller F. Prevalence and characteristics of HIV/HBV and HIV/HCV coinfections in Tuscany. Braz J Infect Dis 2015; 20:330-4. [PMID: 26748234 PMCID: PMC9427616 DOI: 10.1016/j.bjid.2015.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 07/22/2015] [Revised: 11/17/2015] [Accepted: 11/17/2015] [Indexed: 11/13/2022] Open
Abstract
Introduction Worldwide about 30% of HIV-infected patients are coinfected with HCV or HBV. The HIV/HCV coinfection is more common in individuals who have a history of drug addiction. The aims of this study were to assess the HCV and HBV prevalence in HIV-infected patients and analyze their characteristics. Methods We considered the new HIV diagnoses notified by the regional surveillance system of Tuscany from 2009 to 2013. Descriptive analyses were conducted on the socio-demographic characteristics, routes of transmission, and reason to perform the test. In coinfected patients we assessed the risk for being late presenter (LP) or the risk of having AIDS. Results In 5 years of surveillance a total of 1354 new HIV diagnoses were notified: 1188 (87.7%) were HIV alone, 106 (7.8%) HIV/HCV, 56 (4.1%) HIV/HBV, and 4 (0.33%) HIV/HCV/HBV. The main risk factor was injection drug use in 52.8% of HCV/HIV cases, while in HIV/HBV patients the main risk factor was sexual exposure. HIV/HBV coinfected patients showed worse clinical and immunological features than HIV and HIV/HCV patients: 78.6% had CD4 count less than 350 mm−3 (vs. 54.6% and 62.1%, respectively) and 39.4% had AIDS (vs 20.7% and 7.6%). The risk for being LP triples for HIV/HBV (OR 2.98; 95% IC: 1.56–5.70) than patients with HIV alone. Conclusions We have observed less advanced disease in HIV and HCV-HIV patients compared with HBV–HIV coinfected patients. Moreover, our results show a higher prevalence of HIV/HCV among drug addicts and in the age-group 35–59, corresponding to those born in years considered most at risk for addiction. This study also confirms the finding of a less advanced HIV disease in HIV/HCV coinfected patients.
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Affiliation(s)
- Monia Puglia
- Regional Health Agency of Tuscany, Florence, Italy
| | - Cristina Stasi
- Regional Health Agency of Tuscany, Florence, Italy; University of Florence, Department of Experimental and Clinical Medicine, Florence, Italy.
| | | | - Fabio Voller
- Regional Health Agency of Tuscany, Florence, Italy
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Hellard E, Fouchet D, Vavre F, Pontier D. Parasite-Parasite Interactions in the Wild: How To Detect Them? Trends Parasitol 2015; 31:640-652. [PMID: 26440785 DOI: 10.1016/j.pt.2015.07.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [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: 11/10/2014] [Revised: 07/06/2015] [Accepted: 07/31/2015] [Indexed: 01/26/2023]
Abstract
Inter-specific interactions between parasites impact on parasite intra-host dynamics, host health, and disease management. Identifying and understanding interaction mechanisms in the wild is crucial for wildlife disease management. It is however complex because several scales are interlaced. Parasite-parasite interactions are likely to occur via mechanisms at the within-host level, but also at upper levels (host population and community). Furthermore, interactions occurring at one level of organization spread to upper levels through cascade effects. Even if cascade effects are important confounding factors, we argue that we can also benefit from them because upper scales often provide a way to survey a wider range of parasites at lower cost. New protocols and theoretical studies (especially across scales) are necessary to take advantage of this opportunity.
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Affiliation(s)
- Eléonore Hellard
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon I, Centre National de la Recherche Scientifique (CNRS) Unité Mixte de Recherche 5558, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne, France; Percy FitzPatrick Institute, DST-NRF Centre of Excellence, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa.
| | - David Fouchet
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon I, Centre National de la Recherche Scientifique (CNRS) Unité Mixte de Recherche 5558, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne, France; LabEx Ecofect, Ecoevolutionary Dynamics of Infectious Diseases, University of Lyon, France
| | - Fabrice Vavre
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon I, Centre National de la Recherche Scientifique (CNRS) Unité Mixte de Recherche 5558, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne, France; LabEx Ecofect, Ecoevolutionary Dynamics of Infectious Diseases, University of Lyon, France
| | - Dominique Pontier
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon I, Centre National de la Recherche Scientifique (CNRS) Unité Mixte de Recherche 5558, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne, France; LabEx Ecofect, Ecoevolutionary Dynamics of Infectious Diseases, University of Lyon, France
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Berggoetz M, Schmid M, Ston D, Wyss V, Chevillon C, Pretorius AM, Gern L. Tick-borne pathogens in the blood of wild and domestic ungulates in South Africa: interplay of game and livestock. Ticks Tick Borne Dis 2014; 5:166-75. [PMID: 24418761 DOI: 10.1016/j.ttbdis.2013.10.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [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: 07/09/2013] [Revised: 10/09/2013] [Accepted: 10/14/2013] [Indexed: 11/27/2022]
Abstract
We screened for tick-borne pathogens blood samples from 181 wild and domestic ungulates belonging to 18 host species in 4 South African Provinces. Polymerase chain reaction followed by reverse line blotting and sequencing allowed detecting 16 tick-borne pathogen species belonging to the genera Babesia, Theileria, Anaplasma, and Ehrlichia. Ten pathogen species were involved in 29 new host-pathogen combinations. Most infections (77.9%) involved more than one pathogen species. Principal component analysis (PCA) assigned the 163 infections, identified to species level, to 4 groups. Three groups were associated with sheep, cattle, and horse and their respective wild counterparts. Each group was characterised by high homogeneity in pathogen assemblage and host phylogenetic status. These groups characterised the most privileged transmission routes between and among wild and domestic ungulates. The 4th group showed high heterogeneity in pathogen assemblage and host phylogenetic status. This group seems to indicate frequent spill over events in impala of pathogens that usually circulate among cattle- or sheep-related species. Within 6 localities, we sampled an equal number of wild and domestic animals (n=128). On this dataset once having controlled for the significant variation among localities, the infection prevalence and intensity of infection did not differ significantly between wild and domestic hosts. This suggests that both animal types, domestic and wild hosts, could act as evenly efficient sources of infection for themselves and for each other. Overall, this study shed new light on the pathogen circulation naturally achieved at the interplay between wild and domestic ungulates.
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Affiliation(s)
- M Berggoetz
- Institut de Biologie, Laboratoire d'Eco-Epidémiologie des Parasites, University of Neuchâtel, Emile Argand 11, 2000 Neuchâtel, Switzerland.
| | - M Schmid
- Institut de Biologie, Laboratoire d'Eco-Epidémiologie des Parasites, University of Neuchâtel, Emile Argand 11, 2000 Neuchâtel, Switzerland.
| | - D Ston
- Institut de Biologie, Laboratoire d'Eco-Epidémiologie des Parasites, University of Neuchâtel, Emile Argand 11, 2000 Neuchâtel, Switzerland.
| | - V Wyss
- Institut de Biologie, Laboratoire d'Eco-Epidémiologie des Parasites, University of Neuchâtel, Emile Argand 11, 2000 Neuchâtel, Switzerland.
| | - C Chevillon
- Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution, Contrôle (MIVEGEC; UMR 5290 CNRS-IRD-Universités Montpellier I et II), 911 Avenue Agropolis BP 64 501, 34 394 Montpellier Cedex 5, France.
| | - A-M Pretorius
- Department of Health Sciences, Faculty of Health and Environmental Sciences, Central University of Technology, Free State Province, Bloemfontein 9300, South Africa.
| | - L Gern
- Institut de Biologie, Laboratoire d'Eco-Epidémiologie des Parasites, University of Neuchâtel, Emile Argand 11, 2000 Neuchâtel, Switzerland.
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Gouvras AN, Kariuki C, Koukounari A, Norton AJ, Lange CN, Ireri E, Fenwick A, Mkoji GM, Webster JP. The impact of single versus mixed Schistosoma haematobium and S. mansoni infections on morbidity profiles amongst school-children in Taveta, Kenya. Acta Trop 2013; 128:309-17. [PMID: 23313322 DOI: 10.1016/j.actatropica.2013.01.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [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: 03/28/2011] [Revised: 12/26/2012] [Accepted: 01/02/2013] [Indexed: 11/30/2022]
Abstract
Two schistosome species--Schistosoma haematobium and S. mansoni--with two very different pathological profiles (urogenital versus intestinal), are responsible for the majority of human schistosomiasis infections across sub-Saharan Africa. The aim of this study was to determine whether coinfections have an impact on species-specific morbidity measures when compared to single species infections. Children from two neighbouring schools in Taveta, Kenya were grouped by infection status, i.e. uninfected, single species infections or coinfected. Clinical examination of the liver and spleen by palpation was performed and urinary albumin levels were recorded at baseline and at 12 months after praziquantel administration. Additional ultrasonographic profiles of the children's liver, spleen and bladder were incorporated at follow-up. It was found that S. haematobium-associated urogenital morbidity was lower in the coinfected group relative to single S. haematobium infections, even when infection intensities were taken into account. We also observed an association between S. haematobium infection and liver (intestinal-associated) morbidity regardless of coinfections. The findings reported here suggest that further research should be performed on the impact of S. haematobium infections on liver morbidity as well as to determine the impact of mixed schistosome species infections on human morbidity outcomes across different endemic settings.
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Affiliation(s)
- Anouk N Gouvras
- DIDE, School of Public Health, Imperial College, London, UK.
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