mosquito-borne

Rift Valley fever spreads by mosquitoes and contact with infected livestock, causing abortion storms in animals and rare severe disease in humans.

Japanese encephalitis virus spreads from pigs and herons through Culex mosquitoes. Learn the burden, symptoms, vaccines, and real traveler risk.

Chikungunya virus explained: how this mosquito-borne alphavirus spreads, why it causes lasting joint pain, how it differs from dengue, and what vaccines exist.

How the four dengue serotypes infect cells, why a second infection can be worse, what WHO data show about the 2024 record year, and where dengue vaccines stand.