Ehrlichiosis | |
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The lone star tick, which is one of three ticks that can spread Ehrlichiosis. It is characterized by the white dot on its back.[1] | |
Specialty | Infectious diseases ![]() |
Symptoms | Fever, chills, severe headaches, muscle aches, nausea, vomiting, diarrhea, loss of appetite, confusion, and splotchy or pinpoint rash. More severe symptoms include brain or nervous system damage, respiratory failure, uncontrollable bleeding, organ failure, and death.[2] |
Causes | Bite from an infected tick |
Risk factors | Age, being immunocompromised, having received an organ transplant, and certain medications |
Ehrlichiosis is a tick-borne[3] bacterial infection,[4] caused by bacteria of the family Anaplasmataceae, genera Ehrlichia and Anaplasma. These obligate intracellular bacteria infect and kill white blood cells.
The average reported annual incidence is on the order of 2.3 cases per million people.[5]