READING, MA – August 25, 2025 – The Town of Reading Health Department has been notified that two mosquito samples collected in Reading on August 14, 2025, have tested positive for West Nile Virus (WNV). As a result, Reading’s risk level has been upgraded from LOW to MODERATE. No human cases have been reported at this time.
West Nile Virus is most commonly spread to people through the bite of an infected mosquito. While the risk of serious illness is low, all residents are urged to take precautions to protect themselves and reduce mosquito breeding sites in their neighborhoods.

Residents are advised to take the following precautions:
- Be prepared: Stay informed by visiting the Town of Reading Health Department webpage. Repair window and door screens, and eliminate areas of stagnant water such as bird baths, buckets, and unused pools.
- Cover up: When possible, wear long sleeves and long pants outdoors, especially from dusk to dawn.
- Protect children: Use mosquito netting on baby carriages and playpens.
- Use repellent: Apply mosquito repellent when outdoors, particularly during peak activity times (dusk and dawn). Choose products with EPA-registered active ingredients such as DEET, Picaridin, or Oil of Lemon Eucalyptus.
- Dump standing water: At least twice weekly, empty containers that may collect water.
The Massachusetts Department of Public Health (MDPH) and East Middlesex Mosquito Control Project will continue surveillance and monitoring in the region.
For more information and updates, please visit: Town of Reading Health Department
Additional information about WNV and reports of current and historical WNV virus activity in Massachusetts can be found at: MDPH Mosquito-borne Diseases
To see Reading’s current risk level, check: Massachusetts Arbovirus Update