Rickettsialpox
R. akari has been recognized mainly in the urban United States as an agent ofrickettsialpox The organism maintained in a mite-mouse cycle with humans as an accidental host. The organism may, however, have a broader host range and geographic distribution.
A papule appears at the site of mite feeding in the skin during the incubation period, and over 2-7 days, evolves into an eschar. Later fever, chills, malaise, headache, and myalgia develop, followed after 2-6 days by a macular rash that becomes maculopapular and then vesicular before crusting and healing. Fatalities have not been reported.
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