Geneva, January 16, 2018 - International travelers who are going to any area of the state of São Paulo should get vaccinated against yellow fever, according to updated recommendations issued by the World Health Organization (WHO)'s on January 16. Travelers should get the vaccine at least 10 days before traveling.

This recommendation takes into account recent yellow fever activity in the state of São Paulo and adds to recommendations made last year for other areas of Brazil. The determination of new areas considered to be at risk for yellow fever transmission is an ongoing process, and WHO will provide updates regularly. The previous update for Brazil was on April 2017.

Currently, the vaccine is recommended for international travelers heading to Minas Gerais, Rio de Janeiro, Espírito Santo and Maranhão, as well as to certain areas of Bahia and Piauí states.

Immunization is the most important measure to prevent yellow fever. People living or traveling to areas considered at risk should be up to date on their vaccines and should protect themselves from mosquito bites. A single dose of the vaccine provides life-long protection against yellow fever disease.

Travelers with contraindications for the yellow fever vaccine (infants under 9 months, pregnant or breastfeeding women, people with severe hypersensitivity to egg protein or with a severe immunodeficiency or over age 60) should consult their doctor to make a careful evaluation of risks and benefits.

Travelers who present symptoms or signs of yellow fever during their trip or after returning from areas considered at risk of transmission of the disease should seek medical assistance.

For more information:

Update for WHO travelers 
PAHO: Epidemiological update on yellow fever January 12 
PAHO Brazil 
PAHO yellow fever