prevalence of antibodies to spotted fever group rickettsiae in dogs from southeastern australia.recent epidemiologic data suggests that rickettsia australis, the cause of queensland tick typhus, is present in southeastern australia. in order to further confirm this observation, a canine serosurvey was undertaken to determine if naturally occurring antibodies were present in pet and farm dogs from this newly-recognized endemic area. thirty-five of 312 surveyed dogs (11.2%) had indirect immunofluorescent antibody titers of 1:64 or greater against r. australis antigen. positive control sera w ...19911877719
spotted fever group rickettsial infections in australia.more than four decades ago, rickettsia australis was discovered to be the etiologic agent of queensland tick typhus (qtt), yet many unanswered questions persist about the ecology, epidemiology, and clinical features of this disease. we review 46 previously published cases of qtt along with 16 cases discovered by active surveillance. qtt is usually a mild disease. patients often have regional lymphadenopathy and eschars. some have vesicular rashes. because clinical features overlap, serologic tes ...19911962102
enzyme-linked immunosorbent assays for detecting antibody to rickettsia australis in sera of various animal endemic areas of spotted fever-like rickettsial disease have been found in south-eastern australia (gippsland, victoria and flinders island, tasmania). the rickettsia responsible is currently unknown although it may be rickettsia australis. to investigate serological evidence of rickettsial exposure in various wild animal species, a competitive elisa was developed which detected antibodies to r. australis. it was based on inhibition of an indirect elisa detecting antibody to r. australis in ...19902292182
spotted fever group rickettsial infection in south-eastern australia: isolation of rickettsiae.flinders island spotted fever (fisf), a spotted fever group (sfg) rickettsial disease first described in 1991, occurs in south-eastern australia. the isolation of the aetiological agent is described for the first time having been obtained from the blood of two patients. an additional 22 cases are also reported. of these patients four had positive initial serology, and 20 showed seroconversion (using rickettsia australis as antigen). acute phase blood specimens taken from seven patients caused ne ...19938403837
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