Mosquito-Borne Diseases

Culex spp.
Aedes spp.
Aedes albopictus

Diseases spread by mosquitoes are a growing concern in Tennessee. Nine key mosquito species live and carry human diseases in our state, and in recent decades, their populations have been increasing. It is important to remain vigilant by wearing EPA-approved insect repellent whenever you spend time outdoors; for more information, see the page on how to prevent mosquito bites.

Mosquitoes can transmit a number of different diseases in Tennessee (click here for a complete list), but the most common include West Nile virus, La Crosse virus, and Eastern Equine Encephalitis virus. Preventing mosquito bites is the best way to reduce risk of being infected, as there are no vaccines or treatments currently available for these diseases. Chikungunya, Dengue, Malaria, and Zika are mosquito-borne diseases that can be acquired during travel abroad.

The TN Department of Health's Vector-Borne Diseases program tracks and responds to mosquito-borne diseases in the state. We collect and test mosquito samples, investigate reported cases, and collaborate with local agencies to conduct mosquito control and education efforts.

View CDC’s ArboNET Mosquito Surveillance Map

Información Sobre El virus del Nilo Occidental

Content derived from the US Centers for Disease Control and Prevention (CDC) at