Situation summary in the Americas
Since epidemiological week (EW) 1 to EW 9 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.
Following is a summary of the situation in Brazil, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname.
In Brazil, since the beginning of the outbreak in December 2016 to 13 March of 2017, there were 1,538 cases of yellow fever reported (396 confirmed, 184 discarded, and 958 suspected cases remain under investigation), including 255 deaths (134 confirmed, 9 discarded, and 112 under investigation). The case fatality rate (CFR) is 34% among confirmed cases and 12% among suspected cases.
According to the probable site of infection, 79% of the suspected and confirmed cases were reported in the state of Minas Gerais (1,070), followed by Espírito Santo (245), São Paulo (15), Bahia (9), Tocantins (6), Goías (3), and Rio Grande do Norte (1).1 The confirmed cases are distributed in three states: Minas Gerais (303), Espírito Santo (89), and São Paulo (4). Figure 1 illustrates the municipalities with confirmed cases and cases under investigation, as well as confirmed epizootics, and epizootics under investigation.
In the state of Minas Gerais, the downward trend in suspected and confirmed cases continues to decline for the fifth consecutive week. In the state of Espírito Santo there has been a downward trend in cases as of EW 5 of 2017; it will be necessary to continue to observe the evolution of the epidemic.