Cotati, Ca. April 19, 2013 — Mosquitoes and warm weather go hand in hand. Coinciding with the arrival of mosquito season, the California State Legislature declares the week of April 21-27, 2013 as West Nile Virus and Mosquito & Vector Control Awareness Week in California. West Nile virus is a disease transmitted by mosquitoes that can result in debilitating cases of meningitis and encephalitis, and lead to death in humans, horses, some bird species and other wildlife.