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Change in vaccination strategy averted outbreak of urban yellow fever in São Paulo State

Publicado em 23 novembro 2021
Yellow fever is a non-contagious viral disease with two transmission cycles, sylvatic (in wild animals) and urban. Sylvatic yellow fever circulates among monkeys, and in Brazil is transmitted by mosquitoes of the genera Haemagogus and Sabethes, which bite an infected monkey and then infect others. Urban yellow fever circulates among humans and is transmitted by the mosquito Aedes aegypti (human-mosquito-human). Brazil has had no urban yellow fever cases since 1942, but the sylvatic version can [...]