Rickettsia rickettsii mostly affects canines and humans.

Their studies found that Rocky Mountain spotted fever is caused by Rickettsia rickettsii.

"I'm reporting a positive reaction for Rickettsia rickettsii," Dr. Eckhart said.

For instance, Rickettsia rickettsii, carried within ticks, is passed on from parent to offspring tick by transovarial transmission.

The pathogen causing Rocky Mountain spotted fever, Rickettsia rickettsii was named after him.

Rickettsia rickettsii (Western hemisphere)

The disease is caused by Rickettsia rickettsii, a species of bacterium that is spread to humans by Dermacentor ticks.

Rocky Mountain Spotted Fever is transmitted to humans through the bite of ticks infected with the parasite Rickettsia rickettsii.

Howard Taylor Ricketts, American pathologist who discovered the causative agent of Rocky Mountain Spotted Fever, Rickettsia rickettsii, which was also named after him.

Dr. Emile Brumpt felt that the etiologic agent of RMSF, despite some uncertainty about its properties, belonged in the genus Rickettsia and in 1922 proposed the name Rickettsia rickettsii.

Both the American dog tick and the Rocky Mountain wood tick serve as long-term reservoirs for Rickettsia rickettsii, in which the organism resides in the tick posterior diverticulae of the midgut, the small intestine and the ovaries.