Why is Brazil haunted by mosquito-borne diseases?

mosquito diseases
Brazil has not managed to get rid of the Aedes Aegypti mosquito. Photo: Frank60/Shutterstock

In the face of the worst yellow fever outbreak in decades, Brazilians waited hours at a time for vaccinations against the fatal disease in January this year. But yellow fever is far from the only mosquito-borne disease to sweep across the continent. In the last five years alone, Brazil has had serious outbreaks of three threatening arboviruses: Chikungunya, dengue, and the Zika virus.

Most recently, data from the Ministry of Health showed that the Amazon region has registered a 50-percent increase in the number of malaria cases from 2016 to 2017.

Last year, the region recorded 194,000 cases; the trend...

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