People who have received three doses of the new coronavirus vaccine do not need a booster shot. The three doses of vaccine usually refer to either the inactivated new coronavirus vaccine or the recombinant subunit vaccine; the third dose of the inactivated vaccine, the booster shot, is not needed for the time being, and the recombinant subunit vaccine does not need a booster shot for the time being. A booster shot of the new coronavirus vaccine is an additional vaccination given on top of the completion of the routine new coronavirus vaccine dosage form and dose. The purpose is to enhance the immunization effect of the new coronavirus vaccine and improve the preventive effect against the new coronavirus. Currently, the booster shots of the new coronavirus vaccine include a third booster shot that completes the two injections of the inactivated new coronavirus vaccine and a second booster shot that completes the one injection of the adenovirus vector vaccine. Therefore, people who have received three doses of the novel coronavirus vaccine do not need a booster shot. If you experience discomfort that does not resolve after receiving the new coronavirus vaccine, you should consult a doctor to identify the cause of the discomfort and treat it proactively to avoid delaying your condition.