The evolving epidemiology of rotavirus A infection in Brazil a decade after the introduction of universal vaccination with Rotarix®

Autor: Filipe A. Carvalho-Costa, Rosane M. S. de Assis, Alexandre M. Fialho, Irene T. Araújo, Marcelle F. Silva, Mariela M. Gómez, Juliana S. Andrade, Tatiana L. Rose, Tulio M. Fumian, Eduardo M. Volotão, Marize P. Miagostovich, José Paulo G. Leite
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: BMC Pediatrics, Vol 19, Iss 1, Pp 1-10 (2019)
Druh dokumentu: article
ISSN: 1471-2431
DOI: 10.1186/s12887-019-1415-9
Popis: Abstract Background Brazil introduced the monovalent rotavirus vaccine (Rotarix®) in 2006. This study aimed to assess the epidemiology and genotype distribution of species-A rotavirus (RVA) in Brazil, comparing the pre- and post-vaccination periods. Methods Laboratory-based RVA surveillance included 866 municipalities in 22 Brazilian states, over a 21-year period. A total of 16,185 children with diarrheal diseases (DD) aged up to 12 years between 1996 and 2005 (pre-vaccination period, n = 7030) and from 2006 to 2017 (post-vaccination period, n = 9155) were enrolled. RVA was detected using ELISA immune assay and/or polyacrylamide gel electrophoresis and genotyped using nested PCR and/or nucleotide sequencing. RVA-positivity and genotypes detection rates were compared in distinct periods and age groups and Rotarix vaccination status. Results RVA-positivity in pre- and post-vaccination periods was, respectively: 4–11 months bracket, 33.3% (668/2006) and 16.3% (415/2547) (p
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