Within Franklin County, the primary mosquito borne disease that we find year after year is West Nile virus. We detect virus in mosquitoes every year, but recently, the number of human cases has been few. A commonly reported and serious mosquito borne disease in Ohio is La Crosse encephalitis which in some years there are more human La Crosse cases than West Nile virus cases. Diseases such as Zika, Chikungunya, Dengue, Malaria, and Yellow Fever are not found in Ohio, but travelers can return to Franklin County after contracting the disease while visiting areas where infected mosquitoes are found, such as the Caribbean, Central America, South America, Africa and Asia. FCPH sets over 150 mosquito traps each week to look for the mosquito species that carry any of the diseases mentioned above.