The quadrivalent cervical cancer vaccine is clinically indicated to prevent infection with HPV type 6, HPV type 11, HPV type 16 and HPV type 18. HPV6 and HPV11 mainly cause genital warts, which is one of the STDs. This is a good way to prevent the problem. However, it is not true that the quadrivalent vaccine is 100% clinically safe against cervical cancer, the prevention rate is about 90%-92%, so it is important to review the vaccine regularly even after receiving it.