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Mahmood K, Ahmed W, Farooq S, Habib G, Sindhu MA, Asif A, Iftner T. Molecular characterization of human adenoviruses associated with pediatric respiratory infections in Karachi, Pakistan. BMC Infect Dis 2024; 24:538. [PMID: 38811902 PMCID: PMC11134642 DOI: 10.1186/s12879-024-09415-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 05/17/2024] [Indexed: 05/31/2024] Open
Abstract
Human adenoviruses (HAdVs) are a diverse group of viruses associated with respiratory infections in humans worldwide. However, there is a lack of research on the genetic diversity and epidemiology of HAdVs in Pakistan. This study characterized HAdVs in pediatric patients with respiratory tract infections in Karachi, Pakistan, between 2022 and 2023. We analyzed 762 nasopharyngeal samples of children ≤ 5 years. DNA extraction, followed by PCR targeting E2B and hexon genes, was carried out. Data analysis was performed on SPSS 25.0, and phylogenetic analysis of hexon gene was performed on MEGA 11. HAdV was detected in 7.34% (56/762) of patients round the year, but at a significantly higher rate during the winter season. Age was insignificantly associated with HAdV incidence (p = 0.662), but more than 62.5% (35/56) of positive cases were younger than 10 months. The circulating HAdVs were identified as six different types from species B (78.57%) and C (21.42%), with the majority of isolates found to be like B3. HAdV was found to be co-infected with bocavirus (5.4%) and measles (7.14%). These findings revealed a high frequency and genetic diversity of respiratory HAdVs in Karachi, Pakistan. We conclude that periodic and continuous surveillance of adenoviruses and other respiratory pathogens is necessary to improve the prognosis and management of respiratory diseases, thereby reducing the child mortality rate in Pakistan.
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Affiliation(s)
- Khalid Mahmood
- National Institute of Virology, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan.
| | - Waqar Ahmed
- National Institute of Virology, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Saba Farooq
- National Institute of Virology, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Gul Habib
- Department of Microbiology, Abbottabad University of Science and Technology, Havelian, Abbottabad, 22010, Pakistan
| | - Muhammad Ashfaq Sindhu
- Department of Pediatrics, National Institute of Child Health, Jinnah Sindh Medical University, Karachi, Pakistan
| | - Afshan Asif
- Department of Pediatrics, Sindh Government Children Hospital, Karachi, Pakistan
| | - Thomas Iftner
- National Institute of Virology, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
- Institute of Medical Virology and Epidemiology of Viral Diseases, University Hospital Tuebingen, Elfriede-Aulhorn-Str. 6, 72076, Tubingen, Germany
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Ninmer EK, Stewart C, Sharron MP, Ashworth JN, Martinez-Schlurman N, Kavanagh RP, Signoff JK, McCrory MC, Eidman DB, Subbaswamy AV, Shea PL, Sheram ML, Watson CM, Spaeder MC. Taxonomy of Pathogen Codetection in Pediatric Case Fatalities with Adenoviral Respiratory Infection. J PEDIAT INF DIS-GER 2021. [DOI: 10.1055/s-0041-1731409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Abstract
Objective The aim of this study was to determine the prevalence and taxonomy of pathogen codetection in pediatric case fatalities associated with adenoviral respiratory infection.
Methods This retrospective case series included 107 pediatric case fatalities associated with adenoviral respiratory infection.
Results We observed a high rate of pathogen codetection with broad diversity from both respiratory and nonrespiratory sources. We noted differences in codetection characteristics based on immune status; most notably that immunocompromised cases were more likely to have bacteremia and adenoviremia.
Conclusions In pediatric case fatalities associated with adenoviral respiratory infection, we observed a high degree of pathogen codetection.
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Affiliation(s)
- Emily K. Ninmer
- Department of Pediatrics, Division of Pediatric Critical Care, University of Virginia School of Medicine, Charlottesville, Virginia, United States
| | - Claire Stewart
- Division of Critical Care Medicine, Nationwide Children's Hospital, Columbus, Ohio, United States
| | - Matthew P. Sharron
- Division of Critical Care Medicine, Children's National Hospital, Washington, United States
| | - Julia Noether Ashworth
- Division of Pediatric Critical Care, Inova Children's Hospital, Falls Church, Virginia, United States
| | - Natalia Martinez-Schlurman
- Division of Pediatric Critical Care, University of Florida School of Medicine, Gainesville, Florida, United States
| | - Robert P. Kavanagh
- Division of Pediatric Critical Care, Penn State College of Medicine, Hershey, Pennsylvania, United States
| | - Jessica K. Signoff
- Division of Pediatric Critical Care, University of California at Davis School of Medicine, Sacramento, California, United States
| | - Michael C. McCrory
- Division of Pediatric Critical Care, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States
| | - Daniel B. Eidman
- Division of Pediatric Critical Care, Yale University School of Medicine, New Haven, Connecticut, United States
| | - Anjali V. Subbaswamy
- Division of Pediatric Critical Care, University of New Mexico School of Medicine, Albuquerque, New Mexico, United States
| | - Paul L. Shea
- Division of Pediatric Critical Care, University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States
| | - Mary Lynn Sheram
- Department of Pediatrics, Medical College of Georgia, Augusta University, Augusta, Georgia, United States
| | - Christopher M. Watson
- Department of Pediatrics, Medical College of Georgia, Augusta University, Augusta, Georgia, United States
| | - Michael C. Spaeder
- Department of Pediatrics, Division of Pediatric Critical Care, University of Virginia School of Medicine, Charlottesville, Virginia, United States
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