The number of confirmed yellow fever cases in Brazil has surged to 396 since December 2016 , with 134 of them – or 20 % – being fatal . In addition , 16.15 million extra vaccine doses have been sent to states with confirmed cases of the highly contagious disease so far this year . In an update on the yellow fever outbreak in Brazil, the number of confirmed cases now stand at 396 since December 2016. Over 2017 the entire population of Rio de Janeiro will be vaccinated . As we previously mentioned , there are fears yellow fever could spread from Brazil to the US , much like the Zika virus .
The number of confirmed yellow fever cases in Brazil has surged to 396 since December 2016 , with 134 of them – or 20 % – being fatal . In addition , 16.15 million extra vaccine doses have been sent to states with confirmed cases of the highly contagious disease so far this year . Over 2017 the entire population of Rio de Janeiro will be vaccinated . As we previously mentioned , there are fears yellow fever could spread from Brazil to the US , much like the Zika virus .