Journal
REVISTA DE SAUDE PUBLICA
Volume 44, Issue 6, Pages 1144-1149Publisher
REVISTA DE SAUDE PUBLICA
DOI: 10.1590/S0034-89102010005000046
Keywords
Yellow Fever, epidemiology; Disease Outbreaks; Epidemiologic Factors; Zoonoses; Communicable Diseases, Emerging; Epidemiologic Surveillance
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This article describes and discusses factors associated to the reemergence of yellow fever and its transmission dynamics in the states of Sao Paulo (Southeastern Brazil) and Rio Grande do Sul (Southern) during 2008 and 2009. The following factors have played a pivotal role for the reemergence of yellow fever in these areas: large susceptible human population; high prevalence of vectors and primary hosts (non-human primates); favorable climate conditions, especially increased rainfall; emergence of a new genetic lineage; and circulation of people and/or monkeys infected by virus. There is a need for an effective surveillance program to prevent the reemergence of yellow fever in other Brazilian states.
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