The symptoms caused by infection with these Ehrlichia species usually develop 1-2 weeks after being bitten by an infected tick. The tick bite is usually painless, and about half of the people who develop ehrlichiosis may not even remember being bitten by a tick
- Ehrlichiosis is a serious illness that can be fatal if not treated correctly, even in previously healthy people
- Higher case-fatality rates if immunocompromised
- Onset 1-2 weeks after a tick bite
- Ehrlichiae are transmitted to humans by the bite of an infected tick.
- Tick borne
- Fever, Headache, Chills, Malaise, Muscle pain
- Nausea / Vomiting / Diarrhea Confusion
- Conjunctival injection (red eyes)
- Rash (children >> adults)
- Detectable antibody titers usually observed by 7-10 days after illness onset
- PCR result is helpful, a negative result does not completely rule out the diagnosis.
- A peripheral blood smear may reveal morulae (microcolonies of Ehrlichia) in the cytoplasm of white blood cells in up to 20% of patients.
- Doxycycline is the first-line treatment for adults and children of all ages and should be initiated immediately whenever ehrlichiosis is suspected.
- Adults: 100 mg every 12 hours Children under 45 kg (100 lbs): 2.2 mg/kg body weight given twice a day