3.6 Systematic evolutionary analysis of SFTSV strain
Full-length sequences of 49 SFTSV isolates from China, Japan, and South Korea from 2010 to 2016 were selected to cover the six known (A‒F) genotypes of SFTSV. The maximum likelihood method was used for phylogenetic analysis. The results are shown in Figures 2A,2B,2C. The results show that four SFTSV isolates in this study all clustered in genotype A (marked with in the figure), and no other genotypes were detected.