Public health officials have launched an investigation into a possible case of Powassan virus, a rare and serious tick-borne disease that has been increasing in cases over recent years. The potential case comes during a severe tick season in New England, with multiple cases reported in Massachusetts this year.
Powassan virus is spread through the bite of an infected tick and can be transmitted quickly – within 15 minutes. Initial symptoms include fever, headache, and vomiting, while severe cases can cause brain swelling, seizures, and long-term neurological complications. Notably, only one previous case has been reported on Martha’s Vineyard in the past 20 years.
The surge in tick-borne diseases is attributed to a worst tick season in New England in years. Massachusetts has seen three confirmed cases this year alone, raising concerns among officials about potential outbreaks and the need for increased vigilance.
Source: https://www.bostonglobe.com/2025/08/05/metro/marthas-vineyard-tick-virus-powassan