Epidemiological Update - Yellow Fever - 9 February 2017

Situation summary in the Americas

In 2017, as of 8 February, yellow fever cases have been confirmed in Brazil, whereas Colombia and Peru have only reported probable cases, one and three respectively.

In Brazil, between 1 December 2016 and 8 February 2017, there were 1,060 cases of yellow fever reported (215 confirmed, 80 discarded, and 765 suspected cases remain under investigation), including 166 deaths (70 confirmed, 3 discarded, and 93 under investigation). The case fatality rate (CFR) is 33% among confirmed cases and 12% among suspected cases.

According to the probable site of infection, the suspected and confirmed cases are distributed in five states: Bahia (9), Espírito Santo (109), Minas Gerais (847), São Paulo (9), and Tocantins (1).

The confirmed cases are distributed in three states: Espírito Santo (20), Minas Gerais (191), and São Paulo (4) (Figure 1). Of the confirmed cases, 69% were men between 21 and 60 years of age (Figure 2).

With regard to the confirmed deaths, 61 occurred in the state of Minas Gerais, three in the state of São Paulo and 6 in the state of Espírito Santo. In decreasing order, the CFR among suspected and confirmed cases by state is 33% in São Paulo, 7% in Minas Gerais, and 6% in Espírito Santo.