Tickborne Diseases

Diseases spread by ticks continue to be a serious public health concern in Vermont. Tickborne diseases are being reported to the Health Department more frequently in the past decade, with Lyme disease being the most common. Other tickborne diseases, such as anaplasmosis and babesiosis, are on the rise as well. Tularemia is a rare disease that can also be transmitted by ticks.

The Health Department’s Vector-borne Disease Program tracks and responds to tickborne diseases. We collect and analyze data to detect trends in disease activity, investigate reported cases of tickborne diseases, collaborate with other state agencies and educate Vermonters about disease risks and prevention strategies.

The best way to prevent tickborne diseases is to prevent tick bites. Be Tick Smart and use a tick repellent that has been proven safe and effective. Check your body daily for ticks, and if you have been bitten, remove ticks as soon as you can and watch for symptoms of a tickborne disease.

IT's Tick Season 2017

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In This Section

In Vermont, tickborne illnesses are most often transmitted between early spring and late fall since ticks are most active during warm months. Be Tick Smart - take action against bites to prevent Lyme and other diseases.

Six tick species are known to bite humans in Vermont, and five can transmit diseases. But nearly all tickborne diseases reported to the Health Department are caused by the blacklegged tick.

Anaplasmosis is a tickborne disease caused by bacteria called Anaplasma phagocytophilum.

Babesiosis is caused by an infection with a parasite called Babesia. It can be transmitted to humans by the bite of an infected black-legged tick, the same tick that transmits Lyme disease and anaplasmosis.

Borrelia miyamotoi are bacteria that were recently recognized to cause disease in humans.

Ehrlichiosis is a disease caused by an infection with Ehrlichia bacteria. The bacteria are transmitted by the bite of a lone star tick, and may also be transmitted through blood transfusions.

Lyme disease is the most commonly reported tickborne disease in Vermont. In 2015, Vermont had the highest rate of reported Lyme disease cases in the U.S.