Tick-borne relapsing fever (TBRF) is a disease caused by several species of spiral-shaped bacteria (spirochaetes) that are transmitted to humans through the bite of infected soft ticks.
Puugilevitatavat taastuvat palavikku (TBRF) põhjustavad mitmed spiraalsed bakterid (spiroheedid), mis kanduvad inimesele nakatunud äärispuuklaste hammustuste kaudu.