On February 26, Wang Huaqing, chief expert on the immunization program of the Chinese Center for Disease Control and Prevention, said at a press conference of the State Council’s Joint Prevention and Control Mechanism that the current sequential immunization is based on inactivated vaccine immunization. For the inactivated vaccine, a third dose of inactivated vaccine is given at an interval of more than 6 months according to the regulations. In this case, a boost of the same technical route is used. According to the current regulations, there is no need to use sequential immunization for strengthening. For example, Wang Huaqing said that if two shots of inactivated vaccine are given, and the third shot of booster vaccine is given, the interval between the second shot and the second shot should be at least 6 months. In this case, vaccines with different technical routes can be selected for sequential immunization. , or inactivated vaccines, that is, vaccines with the same technical route, can also be selected for booster immunization.
(CCTV reporter Shi Yingchun and Gu Xiaoci)