Prepare for increasing number of mosquitoes in Arizona
Nov. 19
With the rain we’ve had recently, Arizona residents should prepare for increased mosquito activity in the days and weeks ahead.
The Arizona Department of Health Services reported 63 cases of West Nile virus so far in 2025 here in Arizona. Mosquitoes can carry deadly diseases, including Zika and West Nile virus.
ASU researchers said mosquitoes are also surviving our summer weather longer than they have in the past.
John Townsend, Vector Control Division Manager of Maricopa County, joined “Arizona Horizon” to explain how Arizonans should prepare for the increased number of mosquitoes in Arizona.



















