What is the difference between sequential immunization and vaccine “mash-ups”?Here comes the authoritative explanation

2022-05-20 0 By

Under the Joint Prevention and control mechanism of The State Council, a press conference was held on February 26 to introduce epidemic prevention and control and vaccination work, at which the CDC gave an authoritative explanation on sequential immunization.According to Wang Huaqing, chief expert of immunization planning at the Chinese CENTER for Disease Control and Prevention, sequential immunization is a vaccination strategy that uses vaccines of different technical routes at certain intervals and doses in the hope of achieving better prevention effects or further reducing the risk of serious adverse reactions.Wang Huaqing, for example, most of the children’s vaccines are the same type of vaccine to complete the whole process of immunization, the current children’s vaccine vaccination is also orderly follow the immunization procedures, such as polio vaccine to receive four doses, the first two doses of inactivated vaccine, the last two doses of live attenuated vaccine.Sequential immunization is when two vaccines from different technical routes are included in a child’s vaccination program.The common people refer to vaccine “mixing”, but the manufacturers are different, all belong to the same technical route of vaccines, not sequential immunization.Professionally speaking, it is the vaccine of same technical route actually, just manufacturer is different, inactivated vaccine hits a manufacturer this time, second, third time hits another manufacturer, belong to inactivated vaccine actually.Approved by the Joint prevention and control mechanism of The State Council, the NHC has stepped up immunization against COVID-19 vaccines in a sequential manner, and the third dose can be given with a different technical route from the first two doses.Experts said that prior to sequential immunization, the third dose of the same technical route vaccine has been completed, according to the current regulations, there is no need for sequential immunization.If two inactivated vaccines are given and the third booster vaccine is given, the interval between the third booster vaccine and the second booster vaccine should be at least 6 months. In this case, the vaccine of different technical routes can be selected for sequential immunization, and the inactivated vaccine that is the same technical route can be selected for enhanced immunization.There are two main purposes for sequential immunization with NOVEL coronavirus vaccines: one is that different vaccines can complement each other with their advantages; the other is that different people may have more side effects to a certain type of vaccine due to different physical conditions, and vaccination with different technical routes can avoid side effects.(Yangtze River Daily big Wuhan client produced editor integration: Zheng Xiaoxiao source: CCTV news client Beijing Daily, etc.) more exciting content, please download the “big Wuhan” client in each major application market.