08/21/2025
August 21st 2025: Holbrook has been moved into MODERATE risk for West Nile Virus (WNV).
https://www.mass.gov/info-details/massachusetts-arbovirus-update
Follow these preventative measures to keep your family and pets safe!
-->Avoid Mosquito Bites🦟Apply Insect Repellent when Outdoors. Use a repellent with an EPA-registered ingredient, such as DEET (N,N-diethyl-m-toluamide), permethrin, picaridin (KBR 3023), or oil of lemon eucalyptus (p-menthane-3,8-diol (PMD) or IR3535) 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 percent or less on older children. Oil of lemon eucalyptus should not be used on children under three years of age.
-->Be Aware of Peak Mosquito Hours 🌅 The hours from dusk to dawn are peak biting times for many mosquitoes. Consider rescheduling outdoor activities that occur during evening or early morning in areas of high risk.
-->Clothing Can Help Reduce Mosquito Bites 👖
Wearing long sleeves, long pants and socks when outdoors will help keep mosquitoes away from your skin.
-->Mosquito-Proof Your Home 🛞 Drain Standing Water. Mosquitoes lay their eggs in standing water. Limit the number of places around your home for mosquitoes to breed by draining or discarding items that hold water. Check rain gutters and drains. Empty unused flowerpots and wading pools and change the water in birdbaths frequently. Keep mosquitoes outside by having tightly fitting screens on all windows and doors.
-->Protect Your Animals 🐶Animal owners should reduce potential mosquito breeding sites on their property by eliminating standing water from containers such as buckets, tires, and wading pools – especially after heavy rains. Owners should also speak with their veterinarian about mosquito repellents approved for use in animals and vaccinations to prevent West Nile virus (WNV) and EEE. If an animal is suspected of having WNV or EEE, owners are required to report to the Department of Agricultural Resources, Division of Animal Health by calling 617-626-1795, and to the Department of Public Health by calling 617-983-6800.
Find local risk levels for Eastern Equine Encephalitis (EEE) and West Nile Virus (WNV) based on seasonal testing from June to October.