Explore the recorded discovery and history of Chikungunya virus, with source links and stated limits.
WHO describes chikungunya as a mosquito-borne viral disease caused by an alphavirus and transmitted by Aedes mosquitoes that bite during daylight hours. Its name comes from a Kimakonde word of southern Tanzania meaning 'that which bends up', describing the posture of people with severe joint pain. Symptoms overlap with dengue and Zika, so cases can be misdiagnosed.
WHO records that chikungunya virus was first identified in the United Republic of Tanzania in 1952 and subsequently in other countries in Africa and Asia. The name comes from a Kimakonde word of southern Tanzania meaning 'that which bends up'. Identification in one country is not evidence of where the virus originated.
WHO records that urban outbreaks were first recorded in Thailand in 1967 and in India in the 1970s.
Since 2004 chikungunya outbreaks have become more frequent and widespread, which WHO attributes partly to viral adaptations that let the virus spread more easily by Aedes albopictus mosquitoes and to introduction into populations with no previous immunity. The virus has now been identified in more than 110 countries.
The 1952 record describes where the virus was first identified, not the first person infected. The bundled sources do not identify an index patient or establish where chikungunya arose.
Source check: 2026-09-19. Educational content; independent scientific review remains pending.