A surge in tick activity across Connecticut is renewing concerns about Lyme disease, prompting experts to examine the environmental factors driving tick populations, the challenges of prevention, and the future role of vaccines.

Recently reported by CT Community News and CTNewsJunkie, researchers are seeing unusually high numbers of ticks infected with the bacteria that causes Lyme disease, with infection rates reaching levels typically not observed until peak season. Experts point to a combination of environmental conditions, including a snowy winter that insulated overwintering ticks, milder seasonal temperatures, and continued residential expansion into wooded areas where ticks thrive.

According to Dr. David Banach, an infectious disease specialist and epidemiologist at UConn Health, the increase in Lyme disease cases is influenced by multiple factors. While improved reporting may account for some of the rise, environmental conditions continue to play a significant role in the number of infections seen by clinicians each year.

“Lyme disease is chronically underreported.” Dr. David Banach

Dr. David Banach is an infectious diseases physician who leads UConn Health’s Infection Prevention Program and serves as hospital epidemiologist.

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The article also explores ongoing efforts to develop new Lyme disease vaccines. Dr. Paulo Verardi, head of UConn’s Department of Virology and Vaccinology, notes that vaccines could become an important tool in reducing disease risk, but cautions that vaccination alone will not solve the broader challenge posed by expanding tick populations and changing environmental conditions. Effective control, he argues, will require a combination of public education, land management, and efforts to reduce tick abundance.

“To really control tickborne diseases, there needs to be more land management, public education and a drop in the overall tick population.” Dr. Paulo Verardi

Dr. Paulo Verardi is a virologist who specializes in vaccine research and development. He is a Department Head and Associate Professor at UConn and a member of the Center of Excellence for Vaccine Research.

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As Lyme disease continues to spread across North America, understanding the intersection of climate, ecology, public health, and vaccine development is becoming increasingly important. Researchers are working to better understand why tick populations are expanding, how disease risk is changing, and what strategies can best protect people who live, work, and spend time outdoors.

Covering Lyme or other tickborne diseases? We can help.

To learn more about Lyme disease, tick-borne illnesses, vaccine development, infectious disease trends, and public health preparedness, connect with experts such as Dr. David Banach and Dr. Paulo Verardi, whose research and expertise help explain the growing challenges posed by tick-borne diseases.