Ticks as vectors of Rickettsia prowazeki--a controversial issue.
D000818:Animals; D001179:Arthropod Vectors; D003870:Dermacentor; D005455:Fluorescent Antibody Technique; D006168:Guinea Pigs; D007814:Larva; D008196:Lymph; D012283:Rickettsia prowazekii; D012377:Rodentia; D013045:Species Specificity; D013987:Ticks; D014438:Typhus, Epidemic Louse-Borne / Q000209:etiology