A search for the epidemic typhus agent in Ethiopian ticks.

摘要: Abstract The presence of antibodies to Rickettsia prowazeki in domestic animals from several parts Africa, and the isolation this rickettsia blood goats sheep ticks off cattle or camels Ethiopia, led hypothesis that R. nature may occur an extrahuman cycle involving animals. This study attempted recover 2 624 (4 genera, 10 species) collected central southern Ethiopia. The were examined by haemolymph test injection tissues into guineapigs. No strains typhus received there was no serologic evidence suggesting agent any examined. One Amblyomma cohaerens contained organism reacted specifically with fluorescing against prowazeki; attempts isolate identify failed. Fifty-seven (2.2%) (26 A. gemma, 17 variegatum, 14 cohaerens) infected rickettsiae spotted fever group, probably represented conori closely related rickettsial agents.