Yellow fever threat in state of São Paulo, Brazil
The death of some monkeys due to the jungle strain of yellow fever in rural areas near the towns of Severínia and Cajobi means that there is a risk that the virus will be transmitted from monkeys to mosquitoes and subsequently to humans in those areas.
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. Travellers are reminded that many other countries require proof of yellow fever vaccination upon arrival for all travellers equal to or greater than 9-12 months of age arriving from a country where there is a risk of yellow fever.