Tick-borne relapsing fever, Louse-borne relapsing fever
Treatment involves antibiotics, most often tetracycline, doxycycline, erythromycin, or penicillin.
The death rate for untreated LBRF ranges from 10 - 70%. In TBRF, it is 4 -10%. With early treatment, the death rate is reduced. Those who have developed coma, myocarditis, liver problems, or pneumonia are more likely to die.
Notify your medical provider if you are a returning traveler and you develop fever -- there are many different possible infections that will need to be investigated in a timely manner.