Even here in the dry climate of Maricopa County, mosquitoes are a problem. Mosquitoes are small insects that breed in standing water and the female mosquitoes need blood to lay eggs. Sometimes mosquitoes carry germs (e.g., viruses and parasites) that can be spread to a person when the mosquito bites them. Preventing mosquitoes from breeding and avoiding mosquito bites are the best ways to avoid getting these diseases.
To learn more about each mosquito-borne disease, find its name below.
Mosquito-Borne Diseases in Maricopa County 2019
Confirmed and Probable Cases & Deaths as of 11/28/2019
All data are provisional, based on date reported to Public Health.
Disease Statistic Notes
* To date, Maricopa County has only experienced travel-related cases of chikungunya, dengue and Zika, meaning that residents brought the disease in from other places or passed on the disease during birth as the result of infection acquired during travel. † Unspecified Flavivirus Opens a New Window. indicates an infection that could not be attributed to a single mosquito-borne disease.