Vaccines may offer defense against dengue, Zika and chikungunya

The body can be primed to fight mosquito-borne diseases

patients behind mosquito bed nets

SWAT THAT VIRUS  Hospital patients recover from dengue virus infection under bed nets in Asunción, Paraguay, in 2012. The following year, the country hit a high of more than 144,500 reported cases. Vaccines may be the best means of defense against moquito-borne viruses like dengue, Zika and chikungunya.

NORBERTO DUARTE/AFP/GETTY IMAGES

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