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  • Title: [Surveillance on Rickettsia in epidemic areas of scrub typhus in Xinyang areas of Henan].
    Author: Fu XP, Zhang JS, Shen XJ, Luan MC, Li ML, Zhang LJ.
    Journal: Zhonghua Liu Xing Bing Xue Za Zhi; 2007 Jun; 28(6):547-9. PubMed ID: 17939381.
    Abstract:
    OBJECTIVE: To understand the epidemic status of Rickettsia in Xinyang areas of Henan province. METHODS: Samples including liver, spleen, kidney from mouse and chigger mites from Xinyang areas and serum samples were detected by nested-polymerase chain reaction (PCR) and indirect immunofluorescence assay (IFA). RESULTS: In 62 viscus samples from mice organs, the positive rates were 16.13%, 8.06% and 6.45% for Orientia tsutsugamushi, R. typhii and Spotted fever group rickettsiae respectively. In blood clots samples from mice, the positive rates were 8.06%, 6.45% and 1.61 % for O. tsutsugamushi, R. typhii and Spotted fever group rickettsiae respectively. Three out of 26 mouse serum samples were positive for the predicted fluorexcent intensity O. tsutsugamushi. CONCLUSION: Using nested-PCR and IFA methods, O. tsutsugamushi, R. typhii and Spotted fever group rickettsiae were detected in the captured mice living in Xinyang areas of Henan province. Results showed that there were intensive natural reserviors of Rickettsia in Henan province, suggesting that the risk of outbreak of Rickettsia in these areas was high.
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