The incidence rate of Hand, Foot and Mouth disease caused by EV71 within the second year observation period after the second vaccination Within the second year after the second vaccination [clinicaltrials_resource:13935842649f4d9322b7c0e41a7da181]

to evaluate the efficacy of EV71 vacccine against HFMD caused by EV71

The incidence rate of Hand, Foot and Mouth disease caused by EV71 within the second year observation period after the second vaccination Within the second year after the second vaccination [clinicaltrials_resource:13935842649f4d9322b7c0e41a7da181]

to evaluate the efficacy of EV71 vacccine against HFMD caused by EV71