<unk>  is caused by the bacteria Rickettsia australis from the genus Rickettsia. General life cycle of a typical<unk> <unk>  life cycle The<unk>  life cycle consists of four stages: egg, larva, nymph, and adult. An adult female<unk>  can lay over a thousand eggs in her lifetime. Once a<unk>  hatches from an egg, it enters the larvae stage, where it must attach to any available host and begin feeding. After it has fed, it detaches and molts, entering the larger nymph stage. In this stage it must reattach to a larger host and feed again, whereupon it detaches and molts again. This results in the adult stage, where it feeds one last time and is able to sexually reproduce. The stage when<unk> s are most able to transmit this disease is the nymph stage. They are also the most dangerous in this stage since they are usually less than two millimeters in size and can stay virtually undetected until they are done feeding. Transmission<unk>  is transmitted primarily by two types of<unk> : Ixodes holocyclus and Ixodes tasmani. After the initial attachment to a host, depending on the species and life stage of the<unk> , it takes anywhere from 10 minutes to 2 hours for it to begin to feed. Once a<unk>  attaches, it can stay on a host for about 12 to 18 hours and then falls off when full. A<unk>  must be attached for a long period of time to transmit bacteria. A<unk>  that appears flat and small probably has not eaten yet.
Queensland tick typhus
Flying squirrel typhus
North Asian tick typhus
African tick bite fever
American tick bite fever
Scrub typhus
Murine typhus
Epidemic typhus