Chikungunya is found in two species of mosquitoes that have been found in many parts of the world. Outbreaks of chikungunya have been reported in Africa, southern Europe, Southeast Asia and islands in the Indian and Pacific Oceans. In December 2013, chikungunya was found for the first time in the Caribbean.

The mosquito species known to carry chikungunya has not yet been found in Southern Nevada.

There are a few cases in US residents according to the Centers for Disease Control and Prevention. These individuals acquired the illness while traveling to areas with known infection.