The CDC has updated its page on Americas Geographic Distribution | Chikungunya virus. Click through for a misleading map of that distribution: it makes the disease look universal in the US when it's just Florida, and it doesn't show Cuba as a country where chikungunya is spreading locally. The highlights:
• As of July 18, 2014, local transmission had been identified in 24 countries or territories in the Caribbean, Central America, South America, or North America. A total of 436,586 suspected and 5,724 laboratory-confirmed chikungunya cases had been reported from these areas (Updated data from the Pan American Health Organization).
• Chikungunya virus likely will continue to spread to new areas in the Americas (North America, Central America, and South America) through infected people and mosquitoes.
• The mosquitoes that transmit the virus are found throughout much of the Americas, including parts of the United States.
• Since chikungunya virus is new to the Americas, most people in the region are not immune. This means they can be infected and spread the virus to other mosquitoes.