09/09/2026
WNV Risk Increase- MODERATE - Boxford, Georgetown, Groveland, Nahant, Newbury, Newburyport, Rowley & West Newbury
The Massachusetts Department of Public Health (MDPH) announced a risk level increase to MODERATE for West Nile virus (WNV) in the above towns. WNV is transmitted to humans from the bite of an infected mosquito. The mosquitoes that carry this virus are common throughout the state and are found in both urban and rural areas. While WNV can infect people of all ages, people over the age of 50 are at higher risk for severe infection.
By taking a few precautions, people can help to protect themselves and their loved ones until heavy frost:
Avoid Mosquito Bites
• Apply Insect Repellent when you go outdoors. Use a repellent with DEET (N, N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), IR3535 or oil of lemon eucalyptus [p-methane 3, 8-diol (PMD)] according to the instructions on the product label. DEET products should not be used on infants under two months of age and should be used in concentrations of 30% or less on older children. Oil of lemon eucalyptus should not be used on children under three years of age. Permethrin products are intended for use on items such as clothing, shoes, bed nets, and camping gear and should not be applied to skin.
• Clothing Can Help reduce mosquito bites. Although it may be difficult to do when it’s hot, wearing long-sleeves, long pants and socks when outdoors will help keep mosquitoes away from your skin.
• Be Aware of Peak Mosquito Hours - The hours from dusk to dawn are peak biting times for many mosquitoes. When risk is increased, consider rescheduling outdoor activities that occur during evening or early morning. If you are outdoors at any time and notice mosquitoes around you, take steps to avoid being bitten by moving indoors, covering up, and/or wearing repellent.
Mosquito-Proof Your Home
• Drain Standing Water – Many mosquitoes lay their eggs in standing water. Limit the number of places around your home for mosquitoes to breed by either draining or getting rid of items that hold water. Check rain gutters and drains. Empty any unused flowerpots and wading pools and change water in birdbaths frequently.
• Install or Repair Screens - Some mosquitoes like to come indoors. Keep them outside by having tightly fitted screens on all your windows and doors.
Local Health Departments continue to work closely with the MDPH, other agencies, and locally with the Northeast Massachusetts Mosquito Control District (NEMMC) to control mosquitoes in these towns. In response, NEMMC will continue to identify areas in the district that require treatment for larval control.
If you have areas of standing water around your home or any old passenger tires left outside, please Request Service for larviciding site inspection and/or Tire Removal.
Information about WNV and reports of current and historical WNV virus activity in Massachusetts can be found on the MDPH website at: www.mass.gov/dph/mosquito
