**6. Rickettsialpox**

Rickettsialpox is a worldwide (North America, Eastern Europe, Korea and southern Africa) rickettsiosis caused by *Rickettsia akari* and transmitted by the bite of the mouse mite *Lyponyssoides sanguineus.* We can consider it a remerging infection since several cases have been detected in New York City after September 11 attacks (Paddock et al., 2003). Patients have fever, a prominent eschar -which is the best sign of the disease- and rash that, as occurs in ATBF and Queensland tick typhus, may be vesicular. Palms and soles are not involved. The presence of regional lymphadenopathy is common. Patients recover without treatment in most cases (Raoult, 2010b).
