Mosquito & Vector-Borne Diseases

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.
Mosquito

DISEASES


Mosquito-Borne Diseases in Maricopa County 2017

Residents 2017 Confirmed and Probable Cases as of June 22, 2017
Disease
Total Number of Cases
Number of Deaths
Chikungunya*
0
0
Dengue*
0
0
West Nile Virus
3
0
Zika
1
0
St. Louis Encephalitis Virus
1
0
Flavivirus (Unspecified – Dengue/Zika) †
1
0
Flavivirus (Unspecified – West Nile Virus/St. Louis Encephalitis Virus) †
0
0

Disease Statistic Notes


  • * To date, Maricopa County has only experienced imported cases of Chikungunya, Dengue and Zika, meaning that residents brought the disease in from other places.
  • Flavivirus (Unspecified) indicates an infection that could not be attributed to a single mosquito-borne disease.
  • All data are provisional / Based on date reported to Public Health.
Additional data from prior years may be found on the ADHS Mosquito-Borne Disease webpage.