When you think of mosquitoes you may just think of them as an annoyance. Come summertime when you’re spending more time outside, the mosquitoes show.
But, the insects are actually one of the deadliest pests on the planet. They spread diseases such as the Zika virus, West Nile virus, Chikungunya virus, dengue, and malaria among others. More than one million people are killed by mosquito-borne diseases each year. The worst of those diseases is malaria, which caused 438,000 deaths in just 2015, according to the WHO.
Not every mosquito-borne disease has a vaccine or a way to treat it once contracted.