The cervical cancer vaccine, also called HPV vaccine, is a vaccine that prevents the development of cervical cancer, which is mainly caused by infection with the human papillomavirus, or HPV. The vaccine effectively prevents the development of cervical cancer by preventing infection with the HPV virus. The vaccine is effective in preventing the development of cervical cancer by preventing HPV infection. The 9-valent vaccine is the vaccine for 9 subtypes of HPV, so currently the 9-valent vaccine is the cervical cancer vaccine with the widest coverage area.