This study is a mono-center, randomization, double-blind clinical trial in healthy Female subjects between 9 to 14. Under the premise of full informed consent, 540 subjects that meet the requirement of clinical trial in the age of 9-14 will be randomly divided into 3 groups in a ratio of 1:1:1 and injected 2 consecutive batches of Recombinant Human Papillomavirus Bivalent (Types 16, 18) Vaccine (Escherichia coli) Cecolin® separately. The main outcome measures are the immunogenicity consistency and safety surveillance after inoculation according to prescribed immunization procedure.The total number of subjects should be ≥540 and ≤570.
This study is to evaluate lot-lot consistency of Recombinant Human Papillomavirus Bivalent (Types 16, 18) Vaccine (Escherichia coli) .