The quadrivalent vaccine is suitable for use by women between the ages of 9 and 45.
Human papillomavirus, or HPV. quadrivalent vaccine is a vaccine that prevents infection with four types of viruses, HPV6, HPV11, HPV16, and HPV18, and can prevent about 70% of cervical cancers, as well as pre-cancerous lesions of the cervix and adenocarcinoma in situ.
The quadrivalent HPV vaccine currently on the market is mainly suitable for women aged 9 to 45 years old to be vaccinated, and the preventive effect of the vaccine will be affected if it is administered too early or too late.
The protective effect of quadrivalent HPV vaccine lasts for about 8 to 10 years, and there is no evidence that protection is lost after vaccination.
It is worth noting that the quadrivalent HPV vaccine only protects against HPV types 6, 11, 16 and 18, and does not have corresponding protection against other subtypes of HPV. For this reason, it is important to take precautions during sexual activities to avoid other types of HPV viruses. Consultation with a medical professional is recommended for specific cases.