title: STRAIN VARIATION OF RICKETTSIA ORIENTALIS IN THE COMPLEMENT FIXATION TEST.
mesh_terms: D000818:Animals; D001179:Arthropod Vectors; D002965:Classification; D003168:Complement Fixation Tests; D004813:Epidemiology; D006168:Guinea Pigs; D006801:Humans; D007564:Japan; D008925:Mites; D012285:Orientia tsutsugamushi; D012281:Rickettsia; D013223:Statistics as Topic; D014438:Typhus, Epidemic Louse-Borne
keywords: ARTHROPOD VECTORS; CLASSIFICATION; COMPLEMENT FIXATION TESTS; EPIDEMIOLOGY; GUINEA PIGS; JAPAN; MITES; RICKETTSIA; STATISTICS; TYPHUS