The latest delay for the third booster shot of the new coronavirus pneumonia vaccine is about six months. Vaccination is generally carried out by injecting attenuated or inactivated vaccines into the body to stimulate the body’s immune system to produce antibodies, and as time passes the body’s immune activity decreases. The purpose of the third booster shot is to consolidate the body’s immunity obtained from previous vaccinations or to form an immunization program, and it should be administered within half a year at the latest, as vaccination too late will affect the body’s immunity to the new coronavirus. If the vaccinated person is unable to receive the vaccine due to reasons such as allergy to the vaccine, he/she should ask his/her doctor about the specific time to delay the vaccination. If there is any adverse reaction after the third booster injection, you should consult a doctor immediately to avoid delaying your condition. Tips] In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.