Currently there is no need for a booster shot after the NeoCrown booster shot. The New Crown vaccine helps prevent New Crown virus infection. People who receive the inactivated New Crown virus vaccine injection need a third booster shot after two New Crown vaccine shots to achieve better immunization. People who have received one dose of adenovirus vector vaccine need to receive a second booster shot. At present, after receiving a booster shot of New Crown vaccine in China, no further shots are needed for the time being, but the New Crown virus is constantly mutating and the effect of the vaccine is under clinical observation, and new rules may emerge at a later stage. It is recommended that people who are suitable for the New Crown vaccine according to national regulations should receive the New Crown vaccine as required.