The Norfolk County Mosquito Control District confirmed on September 3rd that West Nile virus (WNV) has been detected in mosquitoes collected from Dedham, Massachusetts during routine surveillance. The Massachusetts Department of Public Health has elevated Dedham to a WNV risk level of moderate (https://www.mass.gov/info-details/massachusetts-arbovirus-update).
WNV is most commonly transmitted to humans by the bite of an infected mosquito. The mosquitoes that carry this virus are common throughout the state and are found in urban as well as more 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 common-sense precautions, people can help to protect themselves and their loved ones:
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.
- Install or Repair Screens. Keep mosquitoes outside by having tightly fitting screens on all windows and doors.
The Dedham Public Health Department continues to work closely with the MDPH and the Norfolk County Mosquito Control Project to educate and help protect our community. To learn more please visit:
