In recent years, hand-foot-mouth disease(HFMD)which caused by enterovirus 71(EV71)keeps prevalence in China and becomes one of the major public health problems at this stage. Vaccines are the most cost-effective approaches to prevent the EV71 outbreak. To date, inactivated EV71 vaccines are developed rapidly, and a number of research institutions have completed phase Ⅲ clinical trials. The methods for separation and purification of virus harvest are critical to obtaining the vaccine products with high purit...