Rickettsia, commonly known as tick fever is a bacterium which can cause many diseases that are transmitted by blood-sucking parasitic arthropods such as fleas, lice and ticks.

Tick typhus is actually a form of Spotted fever in Africa and the Indian subcontinent.

Ehrlichiosis is a disease caused by Ehrlichia Canis and spread by the brown dog tick, Rhipicephalus sanguineous. Signs include fever, vasculitis, and low blood counts.