Mosquitoes, primarily from the genus Culex, become infected by feeding on birds infected with the<unk>  virus. The most common vector of this disease within the genus Culex is Culex pipiens, also known as the common house mosquito. Infected mosquitoes then transmit the<unk>  virus to humans and animals during the feeding process. The<unk>  virus grows both in the infected mosquito and the infected bird, but does not make either one sick. Only infected mosquitoes can transmit<unk>  virus. Once a human has been infected with the virus it is not transmissible from that individual to other humans.
Saint Louis encephalitis
La Crosse encephalitis
Powassan encephalitis
Japanese encephalitis
Eastern equine encephalitis
Rasmussen's encephalitis
Viliuisk encephalomyelitis
Tick-borne encephalitis