Operational Maps
Operation Maps

Mechanical traps are used extensively throughout the District on a continuous basis to trap migrating mosquitoes. Contents of the traps are collected and analyzed each week. Each trap’s content indicate the population in a specific area along with information about the mosquito species distribution. The data is submitted to the California Department of Health Services for compilation with other vector control agency data..

California West Nile Virus Surveillance Map:   Map - 2010