Connecticut Reports Historic Case of Rickettsia parkeri Rickettsiosis
Connecticut has reported the first-ever recorded case of a tick-borne disease in the Northeast, marking a significant development in the spread of Rickettsia parkeri rickettsiosis, officials confirmed.
Disease overview
Rickettsia parkeri rickettsiosis, a type of spotted fever, is transmitted through infected mites and tick bites, according to the Centers for Disease Control and Prevention (CDC). This disease presents symptoms similar to Rocky Mountain spotted fever but is generally milder. Patients may experience headaches, fever, rashes, and muscle aches, as noted by the Connecticut Agricultural Experiment Station (CAES).
Traditionally found in southern states, particularly Florida, the disease has progressively moved up the East Coast over the last 80 years, CAES reports.
Factors contributing to spread
Dr. Goudarz Molaei, director of CAES’ Passive Tick and Tick-Borne Disease Surveillance Program, attributes the spread to factors such as rising global temperatures, increased travel, and technological changes. “It is anticipated that warming temperatures related to climate change may lead to the continued range expansion and abundance of several tick species, increasing their importance as emerging threats to humans, domesticated animals, and wildlife,” Molaei stated.
The Gulf Coast tick, responsible for spreading R. parkeri rickettsiosis, was first identified in Fairfield County in 2021. Approximately 30% of these ticks carry the disease. The ticks have since spread to New York and New Jersey, with infection rates rising in 2022 and 2024, although human cases did not emerge until now.
Connecticut’s experience with tick-borne diseases
Connecticut, already familiar with tick-borne diseases, is home to Lyme disease—first discovered in the state. Residents are advised to meticulously check for ticks after spending time in wooded areas. The use of Environmental Protection Agency-approved repellents and minimizing skin exposure outdoors are recommended preventive measures.
This case underscores the importance of awareness and prevention as tick-borne diseases continue to pose emerging threats in new regions.