![]() The two most common species are the deer tick (Ixodes scapularis) and the American dog tick (Dermacentor variabilis). ![]() Oliver estimated that less than 10% of lone star ticks will carry Ehrlichia species that cause ehrlichiosis, and less than 1% of American dog ticks will carry Rickettsia rickettsii. There are 14 different tick species found in Maine. About a quarter to a third of nymph blacklegged ticks will carry the bacteria, but they're smaller than adults so can be more difficult to spot. Lyme is the most common disease, Oliver said, partly because a third to a half of adult blacklegged ticks carry Borrelia. Integument of adult and nymph tuberculated. I Integument of adult granular, of nymph (stage usually seen) very spinose. Luckily for humans, infection risk is not just a function of time the tick has been attached, but also by the proportion of the tick population that's infected with any given disease. Integu lated ment tuberculated or granu lated. Deer ticks that were submitted to MMCRI, from human hosts, were analyzed by the town of reported exposure. "There are a variety of spotted fever diseases of varying severity, but Rocky Mountain spotted fever is the really bad one," he explained. From 1989-2013, MMCRI’s Vector-Borne Disease Laboratory (in cooperation with the State of Maine) offered free tick identification to Maine residents and health providers. Other resources available there include tick identification cards. The American dog tick can transmit Rickettsia rickettsii, which cause Rocky Mountain spotted fever. The Maine CDC has tick removers that can be ordered online for free. This site contains information on services provided by the Maine Department of Health and Human Services. Next, drag each tick to the notepad describing the illness each tick can cause. Once you have all four, drag each one to the correct jar. ![]() Both viral diseases are "extremely rare as far as we know, but they can cause encephalitis-type symptoms." Take the Tick Challenge First, Identify the ticks Click each tick to 'capture' it. The lone star tick can transmit the bacteria Ehrlichia, which cause ehrlichiosis, as well as Bourbon virus and Heartland virus, Oliver said. "It can cause encephalitis and meningitis and can be lethal." It can also transmit Powassan virus, which is "pretty rare but can be very bad," he added.
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