Vector-Borne & Zoonotic Reports

  1. Mosquito-Related
  2. Rabies
  3. 5-Year Combined
  • The Maricopa County Department of Public Health (MCDPH), Office of Epidemiology, and the Maricopa County Department of Environmental Services (MCESD), Office of Vector Control, collaborate to educate and protect the residents of Maricopa County against mosquito-borne illness.

For more information on mosquito-related diseases and current human case counts, go to our Mosquito Diseases page.

West Nile Virus Weekly Case Counts and Deaths


Due to the number of cases and endemic nature of West Nile virus (WNV) in our community, Public Health prepares weekly seasonal reports (April to November) which includes a graphical representation by week of both the number of cases and deaths attributed to WNV.
Current Weekly Seasonal Report (PDF) | View All the Weekly Seasonal Reports

West Nile Virus End of Year Reports

The WNV end of year report provides information such as the annual number of WNV cases in Maricopa County, WNV activity by month, WNV rates per city, and number of mosquito pools by month.
End of Year Final Report (PDF) | View All the End of Year Final Reports

Other Mosquito-Related Diseases


Other county reports for mosquito-borne illness are generated on an as needed basis.  

St. Louis Encephalitis Virus End of Year Report (2015) 

Mosquito-Borne Disease End of Year Reports

The end of year report provides information related to all local and travel-acquired mosquito-borne illness cases in Maricopa County. Data includes types/frequency of symptoms, locations of disease transmission, and characteristics of human infections. 
End of Year Final Report (PDF) |

Mosquito Sampling Statistics


Maricopa County Environmental Services Department (MCDES) Vector Control has an extensive mosquito trapping and testing program that enables staff to identify areas where there is a lot of mosquito activity and to detect mosquito-borne diseases. View the Mosquito-Borne Disease Statistics page for details.

 For more data not found here, you also can visit the ADHS Mosquito-Borne Illness page