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. 1993 Jan;31(1):83–88. doi: 10.1128/jcm.31.1.83-88.1993

Genotypic and antigenic identification of two new strains of spotted fever group rickettsiae isolated from China.

X Yu 1, Y Jin 1, M Fan 1, G Xu 1, Q Liu 1, D Raoult 1
PMCID: PMC262626  PMID: 8093253

Abstract

Four isolates of spotted fever group rickettsiae isolated from ticks in China were compared with all known species and strains of spotted fever group rickettsiae by immunofluorescence assay, DNA polymerase chain reaction followed by restriction endonuclease fragment length polymorphism analysis, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and Western immunoblot. The Chinese isolates belonged to three types, including a novel serotype which has not been described before. One isolate obtained from tick ova of Dermacentor nuttallii in Inner Mongolia was antigenically and genotypically identical to Rickettsia sibirica. Two isolates obtained from Dermacentor sinicus collected from Beijing were identical, different from other members of spotted fever group rickettsiae but apparently closely related to R. sibirica. HA-91, a strain isolated from Hyalomma asiaticum bv. kozlovi olenew, was antigenically and genotypically unique among spotted fever group rickettsiae, and we feel that data presented here should prompt consideration of it as a new species on the basis of current rickettsial taxonomy.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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