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  • Title: Epidemiology and genetic variability of human metapneumovirus during a 4-year-long study in Southeastern Brazil.
    Author: Oliveira DB, Durigon EL, Carvalho AC, Leal AL, Souza TS, Thomazelli LM, Moraes CT, Vieira SE, Gilio AE, Stewien KE.
    Journal: J Med Virol; 2009 May; 81(5):915-21. PubMed ID: 19319957.
    Abstract:
    Epidemiological and molecular characteristics of human metapneumovirus (hMPV) were compared with human respiratory syncytial virus (hRSV) in infants and young children admitted for acute lower respiratory tract infections in a prospective study during four consecutive years in subtropical Brazil. GeneScan polymerase chain assays (GeneScan RT-PCR) were used to detect hMPV and hRSV in nasopharyngeal aspirates of 1,670 children during January 2003 to December 2006. hMPV and hRSV were detected, respectively, in 191 (11.4%) and in 702 (42%) of the children admitted with acute lower respiratory tract infections at the Sao Paulo University Hospital. Sequencing data of the hMPV F gene revealed that two groups of the virus, each divided into two subgroups, co-circulated during three consecutive years. It was also shown that a clear dominance of genotype B1 occurred during the years 2004 and 2005, followed by genotype A2 during 2006.
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