Retrospective survey of severe fever with thrombocytopenia syndrome in patients with suspected rickettsiosis in Japan

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• 作者：Masaaki Satoh^a ; ¹ ; Shintaro Akashi^b ; ¹ ; Motohiko Ogawa^a ; ¹ ; Takatoshi Wakeyama^b ; Hiroshi Ogawa^b ; Aiko Fukuma^a ; Satoshi Taniguchi^a ; Hideki Tani^a ; Takeshi Kurosu^a ; Shuetsu Fukushi^a ; Masayuki Shimojima^a ; Shuji Ando^a ; Masayuki Saijo^a ; ^{msaijo@niid.go.jp}
• 关键词：Severe fever with thrombocytopenia syndrome ; Japanese spotted fever ; Rickettsiosis ; Tick-borne infectious diseases
• 刊名：Journal of Infection and Chemotherapy
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：23
• 期：1
• 页码：45-50
• 全文大小：518 K
• 卷排序：23

文摘

Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne infectious disease caused by the SFTS virus (SFTSV). The aim of this study was to clarify whether SFTS is potentially mis-diagnosed as rickettsioses, including spotted fever, typhus fever, and scrub typhus, which are also tick-borne disease. A total of 464 serum samples collected from 222 patients with clinically suspected rickettsiosis between 1999 and 2012 were tested for antibodies against the SFTSV. Of the 464 serum samples, one was positive for antibodies against the virus in an enzyme-linked immunosorbent assay and indirect immunofluorescence assay. The patient of SFTSV antibody-positive sample (15 days after disease onset) was positive for SFTSV genome in the acute phase sample (3 days after disease onset) as determined via reverse transcription-quantitative polymerase chain reaction. This patient, who was a resident of the Yamaguchi prefecture in Western Japan, was in his 40s when he showed symptoms in 2011. As the result, 1 of 222 patients, who was clinically suspected of rickettsiosis, was retrospectively diagnosed with SFTS. In this case, both the C-reactive protein and white blood cell count levels were lower than the ranges of these parameters for patients diagnosed with rickettsiosis. Therefore, SFTS should be considered in the differential diagnosis for rickettsiosis in Japan.