The body louse has been demonstrated to be the vector of three human pathogens: Rickettsia prowazekii, the agent of epidemic typhus, Bartonella quintana, the agent of trench fever and Borrelia recurrentis, the agent of louseborne.
While we were isolating Bartonella quintana from body lice, 40 Acinetobacter baumannii strains were also isolated and genotyped. One clone was unique and the other was ampicillin susceptible. A. baumannii DNA was later detected in 21% of 622 lice collected worldwide. These findings show an A. baumannii epidemic in human body lice.
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