Under the age of 18 years old generally can not play the third shot of the new Crown pneumonia vaccine, some areas booster shot open to 12 years old, please refer to the local situation; 16 years old minors who have been vaccinated with the first two shots of the nine-valent HPV vaccine can be vaccinated with the third shot. Usually the third shot may be the third dose of the new coronavirus vaccine or the third dose of the nine-valent HPV vaccine. Antibodies to the novel coronavirus were already in the body when the first two doses of the novel coronavirus vaccine were completed, but antibodies are not always present in the body. Over time, the level of antibodies in the body decreases. Therefore, a third shot is needed to boost immunization, but only those who have completed 2 doses of inactivated vaccine and are older than 18 years of age can be vaccinated. In some areas, the booster shot is open up to 12 years of age, so please refer to the local situation for details. The nine-valent HPV vaccine needs to be completed within 6 months. In general, the specific sequence of vaccination is 0 month, 2 months and 6 months. The vaccination is given to women between the ages of 16 and 26, and three vaccinations are required. Therefore, minors are generally not allowed to receive the third dose of the new Crown Pneumonia vaccine, and minors who have reached the age of 16 can receive the third dose of the HPV vaccine. Note: The terms “new coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.