What disease is specifically transmitted by the Blacklegged "Deer" Tick?

Lyme disease is specifically transmitted by the Blacklegged "Deer" Tick (Ixodes scapularis). This tick is a primary vector for the bacterium Borrelia burgdorferi, which causes Lyme disease. When an infected tick bites a human, the bacteria can be transmitted into the bloodstream, potentially leading to a range of symptoms that may include fever, headache, fatigue, and a characteristic skin rash called erythema migrans.

Other diseases listed, while they may involve ticks or other vectors, are not transmitted by the Blacklegged Tick. For example, Rocky Mountain Spotted Fever is transmitted by the American dog tick, and Tularemia can be transmitted by various vectors, including ticks, but is not specifically associated with the Blacklegged Tick. Human Monocytic Ehrlichiosis, caused by the bacterium Ehrlichia chaffeensis, is primarily transmitted by the Lone Star tick. Understanding these distinctions helps in recognizing the specific risk factors associated with different tick species and the diseases they can transmit.