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Zamora-Figueroa A, Rosales RE, Fernández R, Ramírez V, Bastardo M, Farías A, Vizzi E. Detection and diversity of gastrointestinal viruses in wastewater from Caracas, Venezuela, 2021-2022. Virology 2024; 589:109913. [PMID: 37924728 DOI: 10.1016/j.virol.2023.109913] [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: 06/14/2023] [Revised: 10/15/2023] [Accepted: 10/17/2023] [Indexed: 11/06/2023]
Abstract
Gastrointestinal viruses (GIV) are an important cause of childhood morbidity and mortality, particularly in developing countries. Their epidemiological impact in Venezuela during the COVID-19 pandemic remains unclear. GIV can also be detected in domestic sewage. Ninety-one wastewater samples from urban areas of Caracas collected over 12 months and concentrated by polyethylene-glycol-precipitation, were analyzed by multiplex reverse-transcription-PCR for rotavirus/calicivirus/astrovirus and enterovirus/klassevirus/cosavirus, and monoplex-PCR for adenovirus and Aichi virus. The overall frequency of virus detection was 46.2%, fluctuating over months, and peaking in the rainy season. Adenoviruses circulated throughout the year, especially type F41, and predominated (52.7%) over caliciviruses (29.1%) that peaked in the rainy months, rotaviruses (9.1%), cosaviruses (5.5%), astroviruses and enteroviruses (1.8%). Aichi-virus and klassevirus were absent. Rotavirus G9/G12, and P[4]/P[8]/P[14] predominated. The occurrence of GIV in wastewater reflects transmission within the population of Caracas and the persistence of a potential public health risk that needs to be adequately monitored.
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Affiliation(s)
- Alejandra Zamora-Figueroa
- Laboratorio de Ecología de Microorganismos, Centro de Ecología Aplicada. Instituto de Zoología y Ecología Tropical. Universidad Central de Venezuela, Caracas, Venezuela
| | - Rita E Rosales
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular. Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Rixio Fernández
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular. Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Viviana Ramírez
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular. Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Marjorie Bastardo
- Laboratorio de Ecología de Microorganismos, Centro de Ecología Aplicada. Instituto de Zoología y Ecología Tropical. Universidad Central de Venezuela, Caracas, Venezuela
| | - Alba Farías
- Laboratorio de Ecología de Microorganismos, Centro de Ecología Aplicada. Instituto de Zoología y Ecología Tropical. Universidad Central de Venezuela, Caracas, Venezuela
| | - Esmeralda Vizzi
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular. Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela.
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Blanco R, Alcalá AC, Fernández R, Ramírez V, Rosales RE, Páez MG, Alemán H, González R, Zerpa J, Maldonado AJ, Vizzi E. Molecular characterization of human adenovirus causing infantile acute gastroenteritis in Venezuela before and after rotavirus vaccine implementation. Diagn Microbiol Infect Dis 2023; 107:116056. [PMID: 37683387 DOI: 10.1016/j.diagmicrobio.2023.116056] [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: 03/18/2023] [Revised: 07/24/2023] [Accepted: 08/08/2023] [Indexed: 09/10/2023]
Abstract
Human adenoviruses (HAdV) of species F are commonly involved in pediatric acute gastroenteritis (AGE). The real impact on Venezuelan health is unknown. To investigate the prevalence and molecular diversity of HAdV in Venezuela, 630 fecal samples collected from children with AGE in 3 cities, from 2001 to 2013, were tested by PCR. Species F and types F40/41 were identified by REA. HAdV was detected in 123 cases (19.5%), most from outpatient females under 24 months old. A progressive and substantial increase in the detection rate was observed over time, significantly higher in rotavirus vaccinated than unvaccinated children (28.4% vs. 9.5%, P = 0.00019). Phylogenetic analysis of 28 randomly selected genomes showed high similarity among HAdV-F40/41 and those worldwide. HAdV-F of type 41 prevailed (79.8%) and clustered into 2 intratypic major clades. The significant involvement of HAdV-F41 in AGE suggests the importance of actively monitoring viral agents other than rotavirus, especially after vaccine introduction.
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Affiliation(s)
- Ruth Blanco
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Ana C Alcalá
- MU Center for Influenza and Emerging Infectious Diseases, University of Missouri, Columbia, USA; Department of Molecular Microbiology and Immunology, School of Medicine, University of Missouri, Columbia, USA; Bond Life Sciences Center, University of Missouri, Columbia, USA
| | - Rixio Fernández
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Viviana Ramírez
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Rita E Rosales
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - María G Páez
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Héctor Alemán
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Rosabel González
- Sección de Enfermedades Entéricas, Servicio Autónomo Instituto de Biomedicina, Dr. Jacinto Convit, Caracas, Venezuela
| | - José Zerpa
- Laboratorio de Virología, Postgrado en Biología Aplicada, Universidad de Oriente, Núcleo de Sucre, Cumaná, Venezuela
| | - Antonio J Maldonado
- Laboratorio de Virología, Postgrado en Biología Aplicada, Universidad de Oriente, Núcleo de Sucre, Cumaná, Venezuela
| | - Esmeralda Vizzi
- Laboratorio de Biología de Virus, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela.
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