| rickettsia serosurvey in kimberley, western australia. | to determine if antibodies to rickettsiae (scrub typhus, spotted fever, and typhus group rickettsiae) occur among persons living in the kimberley (northern tropical) region of western australia, 920 sera collected in a non-random manner in 1996 from patients in kununurra, broome, fitzroy crossing, wyndham, derby, and halls creek were tested by micro-immunofluorescence for antibodies to a panel of rickettsial antigens. of 920 sera examined, 52 (5.6%) were positive for antibodies to one or more of ... | 1999 | 10344653 |
| evidence of a spotted fever-like rickettsia and a potential new vector from northeastern australia. | a spotted fever-like rickettsia was identified in a hemaphysalis tick by polymerase chain reaction (pcr) amplification and sequencing of the 16s rdna, ompa, and ompb genes. a comparison of these nucleotide sequences with those of other spotted fever group (sfg) rickettsiae revealed that the hemaphysalis tick rickettsia ia was distinct from other previously reported strains. phylogenetic analysis based on both ompa and ompb also indicates that the strain's closest relatives are the agents of thai ... | 2005 | 16363177 |
| detection and identification of a novel spotted fever group rickettsia in western australia. | the extent to which rickettsiae are present in western australia (wa) is largely unknown. recently there has been anecdotal evidence of a disease of unknown but possibly rickettsial origin occurring on barrow island, wa. ticks were collected from people and screened using pcr. the rickettsial species was then cultured and its novelty and phylogenetic position examined. the infecting rickettsial species is divergent enough to be classified as a novel species. sequence data suggest that the evolut ... | 2006 | 17114708 |
| potentially pathogenic spotted fever group rickettsiae present in western australia. | | 2006 | 17121510 |
| high prevalence of rickettsia gravesii sp. nov. in amblyomma triguttatum collected from feral pigs. | a survey of ectoparasites on feral pigs identified two commonly occurring ixodid tick species; amblyomma triguttatum triguttatum and ixodes australiensis. molecular screening of a. t. triguttatum and i. australiensis for the presence of rickettsia species detected the presence of rickettsiae belonging to the spotted fever group (sfg) in 78.4% of screened a. t. triguttatum. none of the screened i. australiensis were positive for rickettsiae. sequence analysis of the glta and ompa loci of positive ... | 2010 | 20488632 |