Severe Fever with Thrombocytopenia Syndrome (SFTS) is a new emerging tick-borne disease caused by the phlebovirus, SFTS virus (SFTSV). The virus was discovered in central China in 2009 and has since been identified in both Japan and South Korea. Significant progress has been made on the molecular biology of the virus, and this has been used to develop diagnostic assays and reagents. Less progress has been made on the epidemiology, maintenance and transmission, clinical manifestations, immunological responses, and treatment regimens. A number of animal models have been investigated but, to date, none recapitulate all the clinical manifestations seen in humans. Vaccine development is at an early discovery phase.
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