Massachusetts Begins Aerial and Truck-Mounted Spraying to Combat EEE Virus

Massachusetts is taking proactive measures to protect its residents from the deadly Eastern Equine Encephalitis (EEE) virus. The state Department of Public Health has announced plans to conduct aerial and truck-mounted spraying in several communities to minimize the risk of EEE transmission.

The spraying operations are scheduled to begin in Plymouth County, targeting areas that have been classified as high or critical risk for EEE. Thirteen communities, including Carver, Halifax, Kingston, Middleborough, Plymouth, Plympton, Rochester, and Wareham, will undergo aerial and truck-mounted spraying. Worcester County will also be sprayed, focusing on the towns of Douglas, Dudley, Oxford, Sutton, and Uxbridge.

EEE is a rare and potentially fatal disease transmitted through mosquito bites. While some infected individuals may not show any symptoms, others can experience brain swelling, leading to severe complications. According to Michelle Bratti, the Plymouth Commissioner of Health and Human Services, between 30% and 70% of EEE cases are fatal. Given the seriousness of the virus, local officials are taking necessary precautions to protect community members.

Massachusetts has seen a total of approximately 115 EEE cases since its first detection in 1938. Although most cases have been concentrated in Bristol, Plymouth, and Norfolk counties, the Department of Public Health emphasizes that EEE can infect humans throughout the state. The most recent outbreak occurred in 2019 and 2020, resulting in 17 human cases and seven deaths over the two years.

The first human case of EEE in 2024 was reported earlier this month when a man in his 80s was exposed to the virus in Worcester County. In response, Plymouth officials have closed town parks and fields from dusk until dawn to reduce mosquito exposure. However, their primary focus is on informing residents rather than alarming them.

To execute the spraying operations, the state’s Reclamation and Mosquito Control Board will oversee aerial spraying in Plymouth County, while truck-mounted spraying in Worcester County will be supervised by the state. The spraying will occur overnight between dusk and 4:30 a.m., utilizing the Anvil 10+10 pesticide. However, state officials have cautioned that the spraying plans are weather-dependent, as the effectiveness of anti-mosquito spraying can be affected by wet weather conditions.

Residents in the affected areas who prefer to avoid or minimize exposure can stay indoors during the spraying. However, officials have emphasized that special precautions are unnecessary. They have also urged individuals with sensitivities to chemicals or existing respiratory conditions, such as asthma, to remain indoors during spraying.

While the state is taking these preventive measures, it is crucial for residents to continue protecting themselves against mosquitoes even after the spraying operations. The state is updating its town-by-town map of EEE risk levels across Massachusetts to keep the public informed.

In addition to EEE, officials have also issued warnings about the West Nile Virus, which is also transmitted through mosquito bites. So far, there have been two confirmed cases of West Nile Virus in 2024.

Massachusetts’ proactive approach to combating the EEE virus demonstrates the state’s commitment to public health and safety. By conducting aerial and truck-mounted spraying in high-risk areas, officials aim to minimize the transmission of EEE and protect residents, particularly vulnerable populations such as children and seniors. However, it is essential for individuals to remain vigilant, follow recommended precautions, and stay informed about the risk levels in their communities.