What does the 9-valent cervical cancer vaccine do?

The nine-valent cervical cancer vaccine is mainly used to prevent cervical cancer, vulvar cancer, vaginal cancer and other diseases caused by human papillomavirus HPV infection. It can also prevent genital warts caused by HPV types 6 and 11. The vaccine covers seven high-risk types of HPV 16, 18, 31, 33, 45, 52, and 58 and two low-risk types 6 and 11, with a preventive effect of more than 90%.

The nine-valent cervical cancer vaccine stimulates the body to produce specific antibodies that neutralize HPV virus particles and block their infection of cervical epithelial cells. Vaccination can significantly reduce the probability of persistent HPV infection and reduce the occurrence of precancerous lesions. Studies have shown that after vaccination among women of appropriate age who are not infected with HPV, the risk of high-grade squamous intraepithelial lesions of the cervix is ​​reduced by 96%. The vaccine does not treat existing HPV infection, but it can protect against other HPV subtypes that are not already infected.

The nine-valent cervical cancer vaccine is suitable for women aged 16-26, and the best age for vaccination is before having sex for the first time. Three doses of vaccination need to be completed within 6 months, and they should be injected intramuscularly in the 0th, 2nd, and 6th months. Common adverse reactions include pain, redness, swelling and low-grade fever at the injection site, which usually resolve spontaneously in 2-3 days. Patients who are allergic to vaccine components, pregnant, or have acute and severe febrile illness should postpone vaccination.

Regular cervical cancer screening is still required after vaccination, because the vaccine cannot cover all high-risk HPV subtypes. It is recommended to combine healthy lifestyle, such as avoiding multiple sexual partners, using condoms, quitting smoking, etc., to further reduce the risk of disease. If you have persistent fever or severe allergic reaction after vaccination, you should seek medical treatment in time.