Abstract:
:The microbiological and molecular characteristics of the rickettsiae isolated from humans with Queensland tick typhus (QTT) caused by Rickettsia australis and the recently described Flinders Island spotted fever (FISF) were compared. Clinically and serologically, the diseases are similar. Cell culture reveals differences in the plaque-forming abilities of the isolates. Characterization of the gene encoding the genus-specific 17-kDa antigen of R. australis revealed a unique nucleotide sequence unlike those of the FISF isolate and Rickettsia rickettsii. Southern blot analysis of rickettsial DNA from the isolates with a 17-kDa-antigen gene probe revealed the presence of this gene in all isolates but no difference in banding patterns. When a probe for the rRNA genes was used, clear differences in banding patterns of isolates from patients with QTT and FISF were revealed. Thus, the rickettsiae isolated from patients with FISF differ from those from patients with QTT and may represent a new rickettsial species.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Baird RW,Lloyd M,Stenos J,Ross BC,Stewart RS,Dwyer Bdoi
10.1128/JCM.30.11.2896-2902.1992subject
Has Abstractpub_date
1992-11-01 00:00:00pages
2896-902issue
11eissn
0095-1137issn
1098-660Xjournal_volume
30pub_type
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journal_title:Journal of clinical microbiology
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doi:10.1128/JCM.17.1.16-21.1983
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journal_title:Journal of clinical microbiology
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doi:10.1128/JCM.37.10.3370-3373.1999
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pub_type: 杂志文章
doi:10.1128/JCM.24.5.749-752.1986
更新日期:1986-11-01 00:00:00
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journal_title:Journal of clinical microbiology
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