Yellow fever alert in São Paulo, Brazil, expands

The public health yellow fever alert has been expanded to include the municipality of Jaboticabal after 2 more monkeys died from the jungle form of yellow fever (sylvatic yellow fever). There is a risk that the yellow fever virus circulating in monkeys will infect local mosquitoes which, in turn, will infect humans. A large scale vaccination program is underway.

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

Advice For Travellers

Travellers who have been vaccinated against yellow fever have a negligible risk of becoming infected. 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.