New Crown booster shots are generally not available ten days in advance. A booster shot is a booster shot of the New Crown vaccine, which has the effect of strengthening immunization and can help the body to increase the level of antibodies in the body within a short period of time, thus effectively reducing the possibility of the body being infected with the New Crown virus. People over 18 years of age who have received two doses of inactivated New Crown vaccine or one dose of New Crown adenovirus carrier vaccine for six months or more are recommended to receive a booster dose of New Crown vaccine in a timely manner. Although the booster can be delayed, it should not be given earlier as it may diminish the effectiveness of the booster. In conclusion, individuals should be fully immunized with the New Crown vaccine and be up-to-date with the New Crown booster. However, even if they are vaccinated, they still need to be protected against neocoronavirus pneumonia, as the vaccine does not provide 100% protection. Individuals who show symptoms of suspected infection with the new coronavirus must seek prompt medical attention. Tip: 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.