"A Clinical Trial to Evaluate the Immunogenicity and Safety of sIPV in a 2+1Sequential Schedule With bOPV in Infants"

Two intramuscular injections of the investigational vaccine (0.5 ml) on Day 0 and Day 30 respectively; Single dose of bOPV (0.1 ml) on Day 60. The investigational Sabin strain inactivated poliovirus vaccine (Vero cell)(sIPV) was manufactured by Sinovac Biotech Co., Ltd . The poliovirus (Live) vaccine type I \& type III (Human Diploid cell) ( bOPV) was manufactured by Beijing Bio-institute Biological Products Co., Ltd.

Two intramuscular injections of the control vaccine(0.5 ml) on Day 0 and Day 30 respectively; Single dose of bOPV (0.1 ml) on Day 60. The investigational Sabin strain inactivated poliovirus vaccine (Vero cell)(sIPV) was manufactured by SANOFI PASTEUR S.A. The poliovirus (Live) vaccine type I \& type III (Human Diploid cell) ( bOPV) was manufactured by Beijing Bio-institute Biological Products Co., Ltd.