Which of the following is NOT a tick borne disease?

Periculosis is not a tick-borne disease. This condition is commonly associated with an infestation of lice, particularly pubic lice (Pthirus pubis), rather than a disease transmitted by ticks.

In contrast, the other diseases listed—Rocky Mountain Spotted Fever, Lyme Disease, and Human Ehrlichiosis—are all transmitted by ticks. Rocky Mountain Spotted Fever is caused by the bacterium Rickettsia rickettsii and is primarily transmitted by the American dog tick. Lyme Disease, caused by the bacterium Borrelia burgdorferi, is transmitted through the bite of infected black-legged (or deer) ticks. Human Ehrlichiosis is caused by bacteria in the genus Ehrlichia, which are also transmitted by ticks, specifically during the bites of infected lone star ticks.

Understanding the vector (the organisms that transmit diseases) for each of these conditions is crucial in public health, as it informs preventative measures and treatment strategies to control the spread of tick-borne diseases.