Is West Nile disease spread by mosquitoes?

West Nile disease is indeed spread by mosquitoes, specifically through the bite of infected mosquitoes that carry the West Nile virus. This virus typically cycles between birds and mosquitoes, and when a mosquito bites an infected bird, it can then transmit the virus to humans and other animals. This is why understanding the life cycle and habitat of mosquitoes is crucial for recognizing how the disease spreads.

The notion that it could only occur in summer or only in urban areas does not capture the broader epidemiology of the virus, as West Nile virus can be present wherever mosquitoes and suitable bird populations coexist, across various environments. Therefore, knowledge about mosquito behavior and control is key to preventing the spread of West Nile disease.