Objectives To investigate the genetic characteristics of EV71strains prevalent in Jinan and to explore potential determinants of EV71 virulence. Methods One-day-old BALB/c mice were inoculated with 6EV71strains.Complete genome sequences of the 6EV71 strains were analyzed using bioinformatics. Results The 6EV71strains from Jinan can be divided into 3 types:highly virulent strains(JN200804,Jinan1002,Jinan1004,and Jinan1005),a slightly virulent strain(Jinan1006),and an avirulent strain(JN200803).These types ar...