title: Mosquito-borne disease
context: The female mosquito of the genus Anopheles carry the malaria parasite. Four different species of protozoa cause malaria Plasmodium falciparum, Plasmodium malariae, Plasmodium ovale and Plasmodium vivax.[3]  (see Plasmodium). Worldwide, malaria is a leading cause of premature mortality, particularly in children under the age of five, with an estimated 207 million cases and more than half a million deaths in 2012, according to the World Malaria Report 2013 published by WHO. The death toll increased to one million as of  2018 according to the American Mosquito Control Association.[4]
question: What is the deadliest mosquito-born disease?
answers: malaria