Recombinant Fifteen Valent Human Papillomavirus Vaccine(E.coli)(Liaoning Chengda Biotechnology)

Main purpose: To evaluate the immunogenicity of the recombinant 15-valent human papillomavirus vaccine (Escherichia coli) in healthy female subjects aged 18 to 45 years, and to select and determine the appropriate dose of vaccine immunization. Secondary purpose: To evaluate the immune persistence of the recombinant 15-valent human papillomavirus vaccine (Escherichia coli) in healthy female subjects aged 18 to 45 years. To further evaluate the safety of the recombinant 15-valent human papillomavirus vaccine (Escherichia coli) in healthy female subjects aged 18 to 45 years.