
Can I still get the HPV vaccine after being infected with HPV?
Disease description:
I have made an appointment for the 9-valent vaccine and have already received two doses. I know that the 9-valent vaccine can prevent HPV. Here comes a question that I really want to understand: if someone has already been infected with HPV, can they still receive the vaccine?

It is still possible to receive the HPV vaccine after contracting an HPV infection, but the specific situation needs to be evaluated based on the type of HPV infection and the type of vaccine used.
1. Preventive Effect of the Vaccine: HPV vaccines primarily prevent types of HPV that an individual has not yet been infected with and do not treat existing HPV infections. If the HPV type you are infected with is not one of the high-risk types covered by the vaccine (e.g., type 16, type 18), vaccination can still help prevent infection from other HPV types.
2. Vaccination Recommendations After Infection: For individuals already infected with HPV type 16 or 18, the effectiveness of the HPV vaccine may be limited since these two types are the primary causes of cervical cancer. However, vaccination may still elicit a certain degree of immune response, increase antibody titers, and provide some protection against infection with other HPV types and against more severe lesions.
3. Consultation Before Vaccination: Before receiving the HPV vaccine, it is recommended to consult with a doctor or a professional healthcare provider. Detailed inquiries should be made regarding the vaccine's coverage and the population for whom it is suitable, to ensure that your personal health condition is appropriate for vaccination.