Timeliness of yellow fever vaccine recommendations.

Dates of reported deaths or epizootics among non-human primates and onset of illness for confirmed human yellow fever cases in nine municipalities identified as the Probable Place of Infection for confirmed cases, Rio Grande do Sul, Brazil, October, 2008 to June, 2009.
* Note: Denotes interval (in days) from first reported epizootic to collection of YFV-positive specimens. No specimens were obtained from initial investigations on 21 January 2009 in Santa Cruz do Sul and Vera Cruz. Specimens collected on 3 and 14 February from Santa Cruz do Sul and on 19 February 2009 from Vera Cruz tested negative for the presence of YFV.