Is there an age restriction for the 9-valent vaccine?

The term "9-valent vaccine" refers to the 9-valent HPV vaccine. Generally, the age limit for the 9-valent HPV vaccine is from 9 to 45 years old. The details are as follows:

The 9-valent HPV vaccine helps prevent cervical cancer caused by HPV infection. It targets nine common types of HPV: 6, 11, 16, 18, 31, 33, 45, 52, and 58. This vaccine has strong immunogenicity. After completing the vaccination schedule, antibody levels reach a relatively high plateau and can last for at least four years. Cervical cancer is a common gynecological malignancy; therefore, most people should receive the 9-valent HPV vaccine. In China, many cervical cancer patients are infected with HPV types 16, 52, and 58, making vaccination among eligible individuals an effective measure to reduce disease incidence. The recommended age range of 9 to 45 years is primarily based on stronger preventive efficacy observed in this age group.

In addition to receiving the 9-valent HPV vaccine, most individuals also need regular cervical cancer screening, as early detection plays a positive role in prevention, diagnosis, and treatment.