Practice question
Question
The pathogen responsible for louse-borne relapsing fever is
Explanation
Louse-borne relapsing fever is caused by Borrelia recurrentis, transmitted by Pediculus humanus humanus. The spirochete undergoes antigenic variation causing recurrent febrile episodes. Unlike tick-borne Borrelia, it has a degraded genome and is transmitted when crushed louse lice contaminate bite wounds.
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