Lyme disease is not a new arrival to the region, but its prevalence has seen marked shifts. While historical data often highlighted Eastern Massachusetts and the Cape as “hot spots,” the counties of Berkshire, Franklin, Hampshire, and Hampden have seen a steady increase in reported cases over the last decade.
Regional Statistics: In Massachusetts, Lyme disease has reached epidemic proportions. Current estimates suggest that the actual number of cases could be significantly higher than those officially reported due to the complexity of laboratory-only case criteria.
Target Demographics: In the Northeast, infection rates often peak among children aged 5–15 and adults aged 40–65. Within these groups, boys aged 5–10 are statistically at the highest risk, often due to higher levels of outdoor play in tick-heavy habitats.
Lyme disease is a multi-systemic infection, meaning it can affect the skin, joints, nervous system, and heart.
Early Localized Stage: Often marked by the Erythema migrans (bullseye) rash, though this appears in only about 70–80% of cases. Flu-like symptoms including fever, fatigue, and muscle aches are common.
Early Disseminated Stage: If untreated, the bacteria spread through the bloodstream, potentially causing facial paralysis (Bell’s palsy), heart palpitations, or meningitis.
Late Disseminated Stage: This can occur months or years later, resulting in chronic arthritis (particularly in the knees) and neurological “brain fog.”
In Western Massachusetts, the risk is highest at the ecotone—the transition zone where manicured lawns meet the woods. Ticks do not jump or fly; they use a behavior called “questing,” where they cling to low-lying vegetation or leaf litter and wait for a host to brush by.
Common high-risk areas include:
Stone walls (which house mice, the primary reservoir for the bacteria).
High grass and brushy areas.
Piles of fallen leaves.
