Dengue’s Dangerous Cousin

A confirmed case in Haiti of the mosquito-borne virus Mayaro has health officials wondering if it will become the next Zika. In the November issue of Emerging Infectious Diseases, CDC researcher Glenn Morris reports finding the disease—which is similar to dengue fever—in an 8-year-old boy in early 2015. The virus, first identified in 1954 in Trinidad, has until now been confined to small pockets in South America. 
 
Morris and his team found the disease accidentally, while testing for malaria and typhoid. Now researchers are wondering how under-diagnosed Mayaro may be and how it might spread under favorable circumstances.
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