Inactivated Poliomyelitis Vaccine Made From Sabin Strain

This study includes both active and passive safety monitoring in large pupulations for the phase IV safety monitoring study of Inactivated Poliomyelitis Vaccine Made From Sabin Strain (sIPV).

For active safety monitoring in expanding populations, a total of 20,019 participants in Shanghai CDC have been enrolled in accordance with GCP for close safety monitoring for immediate adverse events and telephone or visiting follow-up (30 min, 24h, 3d, 7d, 14d, 30d) For passive safety monitoring in larger populations, the purpose is to observe rare adverse events after primary and booster immunization with sIPV by passive safety surveillance via AEFI monitoring system in Shanghai CDC. A total of 29,712 infants have been enrolled, and the adverse events of the participates have been collected via AEFI monitoring system and evaluated after 3-dose sIPV for primary immunization.