Yellow fever outbreak in Brazil - update

In Brazil, since the beginning of the outbreak in December 2016, there were 1,368 cases of jungle (sylvatic) yellow fever reported. Of these, 326 were found to have positive laboratory tests for this virus. Among the laboratory confirmed cases, the death rate has been 33%. Many of the suspected cases are still under investigation and awaiting laboratory results.

As before, most of the infected people have been reported from the state of Minas Gerais. Significant numbers of cases have also occurred in the state of Espírito Santo (185), while sporadic cases have been reported from the states of São Paulo, Bahia, Tocantins, Goiás and Rio Grande do Norte. There is a promising downward trend in the number of cases reported in Minas Gerais.

There is still no evidence that the virus has spread into urban mosquitoes.

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

Advice For Travellers

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.

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