title: Respiratory syncytial virus groups A and B in Porto Alegre, Brazil, from 1990 to 1995 and 1998.
abstract: We analyzed the respiratory syncytial virus (RSV) groups and their epidemiological pattern that were detected over the course of seven years in southern Brazil. The two RSV groups co-circulated each year, but frequencies of groups A and B varied both between and within yearly outbreaks. In 1991, group A predominated over group B (p=0.0016). RSV outbreaks analyzed showed a temperature-dependent pattern and no association with rainfall, similarly to other countries from southern South America. Knowledge of the variants is important in terms of both diagnosis and definition of a vaccine composition.
authors: Laboratório Central, Seção de Virologia, Fundação Estadual de Produção e Pesquisa em Saúde, Porto Alegre, RS, 90650-090, Brasil. smstra@bol.com.br
authors: S M
authors: SM
authors: Straliotto
authors: S M
authors: SM
authors: Nestor
authors: M M
authors: MM
authors: Siqueira
mesh_terms: D001938:Brazil / Q000453:epidemiology; D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D007223:Infant; D009305:Nasopharynx / Q000821:virology; D018357:Respiratory Syncytial Virus Infections / Q000453:epidemiology*; D018113:Respiratory Syncytial Virus, Human / Q000145:classification / Q000302:isolation & purification*; D012621:Seasons; D013696:Temperature