| Species | Disease | Vector |
|---|---|---|
| Rickettsiae: Spotted fever group | ||
| R. rickettsii | Rocky Mountain spotted fever | Multiple Dermacentor, Amblyomma, and Rhipicephalus ticks |
| R. conorrii | Boutonneuse fever, Mediterranean spotted fever | Rhipicephalus sanguineus ticks |
| R. japonica | Oriental spotter fever | Tick |
| R. sibirica | Tick | |
| R. australis | Tick | |
| R. slovaca | Tick-borne lymphadenopathy | Dermacentor marginatus ticks |
| R. africae | African tick-bite fever | Amblyomma hebraeum and A. variegatum |
| R. honei | Tick | |
| R. aeschlimanii | Tick | |
| R. helvetica | Tick | |
| R. parkeri | A. maculatum ticks | |
| R. heilongjianghensis | Tick | |
| R. raoultii | Tick | |
| R. massiliae | Tick | |
| R. amblyommii | Tick | |
| R. monacensis | Tick | |
| R. philipii strain 364D | Tick | |
| R. felis | Flea | |
| R. akari | Rickettsialpox | Liponyssoides sanguineus house mouse mites |
| Rickettiae: Typhus group | ||
| R. typhi | Endemic (murine) typhus | Xenopsylla cheopis (rat flea) and Ctenocephalides felis (cat flea) |
| R. prowazekii | Epidemic (louse-borne) typhus | Pediculus humanus corporis (human body louse) |
| Rickettsiae: Scrub typhus group | ||
| Orientia tsutsugamushi | Scrub typhus | Chiggers (trombiculid mites) |
| Anaplasma | ||
| A. phagocytophilum | Human granulocytotropic anaplasmosis | Tick |
| Ehrlichia | ||
| E. chaffeensis | Human granulocytotropic anaplasmosis | Amblyomma americanum ticks (the Lone Star tick) |
| E. ewingii | Human granulocytotropic anaplasmosis | A. americanum and Dermacentor variabilis ticks |
| E. canis | Tick | |
| Other | ||
| Neoehrlichia mikurensis | Tick | |
| Neorickettsia sennetsu | Raw fish | |
| Wolbachia | Helminths | |
