Threat of yellow fever in São José do Rio Preto region, São Paulo, Brazil

Health authorities are warning all people travelling to the São José do Rio Preto region, in the north of São Paulo state, to be vaccinated against yellow fever. At least 4 dead monkeys and perhaps as many as 40 more have died in this region from yellow fever. There is a suspicion that circulation of the virus in jungle monkeys has intensified, and there is a potential risk of transmission to humans by infected mosquitoes.

Visit our Health Library for more information on exposure to and the prevention of Yellow Fever.

Advice For Travellers

Although no recent human cases of yellow fever have been diagnosed in this region, increasing transmission of the virus in jungle monkeys may create an increased risk of exposure for humans in this region. Travellers to areas where there is a risk of exposure to yellow fever can reduce that risk by obtaining a yellow fever vaccination 10 days before travelling. In addition, travellers should take all necessary precautions to avoid mosquito bites.

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