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Título: Outbreak of acute respiratory infection among infants in Lisbon, Portugal, caused by human adenovirus serotype 3 and a new 7/3 recombinant strain
Autor: Andrade, Helena Rebelo de
Pereira, Cristiana
Gíria, Marta
Prudêncio, Ema
Brito, Maria João
Calé, Etelvina
Taveira, Nuno
Palavras-chave: Resistência aos Antimicrobianos
Issue Date: Apr-2010
Editora: American Society for Microbiology.
Citação: J Clin Microbiol. 2010 Apr;48(4):1391-6. Epub 2010 Feb 10
Resumo: Human adenoviruses (AdVs) typically cause mild illnesses in otherwise healthy hosts. We investigated a pediatric outbreak of acute respiratory infection with fatal outcomes that occurred in Lisbon, Portugal, in 2004. Biological specimens were collected from 83 children attending two nurseries, a kinesiotherapy clinic, and the household of a nanny. Adenovirus infection was confirmed in 48 children by PCR and virus isolation. Most (96%) isolates were classified as being of subspecies B1. Phylogenetic analysis of fiber and hexon gene sequences revealed that most infants were infected with AdV serotype 3 (AdV3) strains. Infants attending one nursery harbored a new recombinant strain containing an AdV serotype 7 hexon and serotype 3 fiber (AdV7/3). Both the AdV3 and the AdV7/3 strains caused fatal infections. Two different serotype 3 strains were circulating in Lisbon in 2004, and the new AdV7/3 recombinant type originated from only one of those strains. These results demonstrate that recombination leads to the emergence of new adenovirus strains with epidemic and lethal potential.
Arbitragem científica: yes
ISSN: 0095-1137
Versão do Editor:
Appears in Collections:DDI - Artigos em revistas internacionais

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