Chikungunya is a mosquito-borne viral disease that causes fever and severe joint pain. It was first isolated in Tanzania in 1952. Major outbreaks have occurred in parts of Africa, Asia, Europe, and India. The virus is transmitted via Aedes mosquito bites. There is no vaccine, so prevention focuses on avoiding mosquito bites and eliminating mosquito breeding sites. Symptomatic treatment is used to treat pain and fever, but joint pain can persist for months or years.