Recent topics in the research field of severe fever with thrombocytopenia syndrome (SFTS)

  • SAIJO M
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Abstract

Seven years have passed since the discovery of a novel infectious disease, severe fever with thrombocytopenia syndrome (SFTS) caused by a novel Phlebovirus, SFTS virus (SFTSV), in PR China. It was also confirmed that SFTS was endemic to Japan through an identification of a woman, who died of SFTSV infection in Yamaguchi prefecture in late 2012. Approximately 6 years have passed since the discovery of SFTS-endemicity in Japan. At present, SFTS is endemic to PR China, South Korea and western Japan. SFTSV is maintained between several species of ticks such as Haemaphysalis longicornis and wild and domestic animals in nature. Therefore, we cannot escape from the risk of being infected with SFTSV. Based on the similarity in the characteristics of the clinical symptoms including the high case fatality rate, mode of infection to humans, pathology and virology between SFTS and Crimean-Congo hemorrhagic fever (CCHF), SFTS should be classified as viral hemorrhagic fever. Although the time from the discovery of SFTS is still short, there have been many scientific reports on the epidemiological, clinical, and/or pathological, and virological studies on SFTS. Favipiravir was reported to show an efficacy in the prevention and treatment of SFTSV infections in an animal model. A clinical study to evaluate the efficacy of favipiravir in the treatment of SFTS patients has been initiated in Japan. Specific and effective treatment with antiviral drugs for and preventive measures of SFTS with vaccination shoued be developed through scientific, clinical, and basic research.

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SAIJO, M. (2018). Recent topics in the research field of severe fever with thrombocytopenia syndrome (SFTS). Uirusu, 68(1), 41–50. https://doi.org/10.2222/jsv.68.41

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