Key Facts:
Eastern Equine Encephalitis (EEE) is a very rare but serious disease transmitted by infected mosquitoes that can cause severe illness and even death.
The last human case of EEE occurred in 2020.
There is no specific treatment for EEE; prevention is crucial.
West Nile virus (WNV) differs from EEE in its severity and impact on communities. Roughly 80% of people infected with WNV do not develop any symptoms. Severe symptoms may occur in about 1 in 150 infected people.
WNV is endemic and occurs annually.
Adult Mosquito Surveillance and Larval Mitigation:
Pioneer Valley Mosquito Control District (PVMCD) conducts comprehensive arbovirus surveillance on a weekly basis in South Hadley and neither EEE or WNV have been detected in the area this year.
As a preventative measure, PVMCD targets the habitats of specific vector species by treating catch basins with Bti briquets to reduce Culex pipiens mosquito populations, the primary vector for WNV.
For questions regarding Pioneer Valley Mosquito Control District's surveillance and mitigation program, contact John Briggs at john.c.briggs@mass.gov.
Protective Measures:
Avoid peak mosquito hours from dusk to dawn when mosquitoes are most active.
Use EPA-approved repellents.
Wear long sleeves and pants when possible.
Ensure window and door screens are intact to keep mosquitoes out.
Eliminate standing water by regularly emptying containers that collect water, such as flower pots, bird baths, kiddie pools, tarps, and gutters.
Stay Informed:
Adult Mosquito Spraying for EEE: