Human Ewingii ehrlichiosis
| Pathogen: Ehrlichia ewingii |
| Tick vector: Primarily Amblyomma americanum |
| Geographic distribution: Southeastern and south-central regions |
| Classic presentation: Similar to human granulocytic anaplasmosis and human monocytic erhlichiosis; laboratory abnormalities may no longer be present after 1 week of symptoms |
| Diagnosis: Polymerase chain reaction assay |
| Treatment: Doxycycline, typically for 7–14 days |