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.
Reports of tickborne diseases are on the rise in the U.S. and Vermont. States in the Northeast, Mid-Atlantic and Upper Midwest have the highest incidence of Lyme disease in the country. While Lyme disease is the most common tickborne disease...
Powassan virus disease is a rare but serious illness caused by the bite of an infected tick. Three species of ticks found in Vermont can transmit the virus, but only one of these species – the blacklegged tick – commonly...
Anaplasmosis is a tick bite illness caused the bacterium Anaplasma phagocytophilum. It is spread by the bite of infected blacklegged ticks, the same tick that transmits Lyme disease, babesiosis, hard tick relapsing fever, and Powassan virus. It is also possible...
Hard tick relapsing fever ( formerly known as Borrelia miyamotoi disease) is caused by the bacterium, Borrelia miyamotoi, which was first discovered in Japan in 1995. In the United States, the first human infections were reported in 2013. The first...
Public Health GIS Maps The Health Department supports several web apps that address important public health issues using GIS technology. Some example use cases are: See if cyanobacteria blooms might affect your summertime water recreation plans. Find out if others...
Babesiosis in Vermont is caused by an infection with a parasite called Babesia microti . It is transmitted to humans by the bite of infected blacklegged ticks, the same tick that transmits Lyme disease and anaplasmosis.
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 2017, Vermont had the highest rate of reported confirmed and probable Lyme disease cases in the U.S.