What is the primary vector for West Nile virus?

The primary vector for West Nile virus is mosquitoes. This virus is primarily transmitted to humans and other animals through the bite of infected mosquitoes, specifically belonging to the Culex species. Mosquitoes acquire the virus by feeding on infected birds, which serve as the primary reservoir for West Nile virus.

Understanding the role of mosquitoes in the transmission of this virus is crucial for public health efforts focused on preventing outbreaks. Control measures often emphasize mosquito surveillance and population reduction to decrease the risk of human exposure to the virus. While other vectors and animals can play roles in the ecology of various infectious diseases, for West Nile virus specifically, the transmission cycle primarily hinges on the relationship between mosquitoes and birds.