Peak yellow fever season in Brazil

Mosquito swimming on a lake
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It is peak transmission time for yellow fever in São Paulo, Brazil, and the Pan-American Health Organization (PAHO) has issued a yellow fever update that reports that there have been 12 confirmed human cases, including six deaths, in the municipalities of Eldorado (nine cases), Jacupiranga (one case), Iporanga (one case), and Cananeia (one case).

PAHO said that cases reported during the current 2018-19 seasonal period in four municipalities in São Paulo State, as well as the confirmation of epizootics in the state of Paraná, mark the beginning of what could be a third cycle and a progression of the outbreak towards the Southeast and South regions of the country.

The disease is mosquito borne and is found in tropical and subtropical areas in Central and South America and Africa. Travellers are warned that proof of vaccination may be required of any traveller entering or leaving an area at risk of yellow fever transmission. Vaccination should be obtained at least 10 days before travelling. In addition, precautions should be taken against mosquito bites and travellers should be aware of the signs and symptoms of yellow fever and seek care if they experience them during or after travel to an area at risk of disease transmission.