Like Zika virus, dengue fever is spread to people through mosquito bites. The Centers for Disease Control and Prevention says dengue fever is a leading cause of illness and death in the tropics and subtropics, with as many as 400 million people infected yearly. Mayo Clinic infectious diseases specialist Dr. Pritish Tosh helps us understand this viral disease.
Dengue fever can be a very serious infection and is seen in many parts of the world including Asia and South America, and it is now extending into Latin America and the Caribbean. “This is a purely vector-borne disease, meaning you have to be exposed to an insect that is carrying the virus,” says Tosh. “It does not transmit person-to-person.”