Litchi News Beijing Work Department Reporter /Liu Xin
On February 19, the joint prevention and control mechanism of the State Council held a press conference. At the meeting, Wu Liangyou, deputy director of the Disease Control Bureau of the National Health Commission, introduced that the current epidemic prevention and control task of "external prevention and import, internal prevention and rebound" in the mainland is still arduous. According to the progress of the research and development and use of the new crown virus vaccine, the National Health Commission has further supplemented and improved the strategy of strengthening immunization against the new crown virus vaccine. Recently, with the approval of the joint prevention and control mechanism of the State Council, the National Health Commission has begun to deploy a sequential strengthening of immunization.
Previously, the target population over the age of 18 who had been vaccinated with the inactivated vaccine of Sinopharm Zhongsheng Beijing Company, Wuhan Company, Beijing Kexing Company, and the adenovirus vector vaccine of Tianjin CanSino Company for 6 months could be activated with a dose of homologous enhanced immunity, that is, strengthened with the original vaccine. After the implementation of the sequential enhanced immunization strategy, the target population who has completed the full vaccination of the above three inactivated vaccines can also choose the recombinant protein vaccine of Zhifeilong Koma or the adenovirus vector vaccine of Cansino for sequential enhanced immunization. For the target population, homologous booster immunization and sequential booster immunization, choose one or the other. In addition, the joint prevention and control mechanism of the State Council also approved the homologous enhanced immunization of the new coronavirus inactivated vaccine of Shenzhen Kangtai Company and the Institute of Biology of the Medical Academy. Whether it is homologous enhancement or sequential strengthening, it is implemented in people over 18 years old who have completed the full vaccination for 6 months.
Research data show that homologous enhanced immunization and sequential enhanced immunization can further improve the immunization effect, and people who hope to meet the vaccination conditions can take the initiative to vaccinate and vaccinate early, increase health and fuel epidemic prevention.
About what is sequential immunity? Wang Huaqing, chief expert of the immunization program of the Chinese Center for Disease Control and Prevention, gave an answer. Wang Huaqing said that sequential immunization is a vaccine of different technical routes according to a certain interval of vaccination, as well as the number of doses vaccinated, in order to further improve the prevention effect, but also to consider its safety, an immunization strategy adopted. Sequential immunization is also a process of continuous improvement of the mainland immunization strategy, and it is a decision based on scientific evidence.
Wang Huaqing, chief expert of immunization program at the Chinese Center for Disease Control and Prevention
He said that before we talked about sequential immunization, the main thing is that the polio vaccine we applied is a live attenuated vaccine, which is what everyone calls a polio sugar pill, the whole process of vaccination requires 4 doses, and now the vaccine we have vaccinated is also completed 4 doses, but the first two doses are vaccinated with inactivated trivalent polio vaccine, and the last two doses we use bivalent live attenuated vaccine to vaccinate. In the process of developing a sequential immunization strategy, on the one hand, its protective effect is considered, on the other hand, the procedure of sequential immunization is used for polio vaccines, and more importantly, it is also considered to further reduce the risk of serious adverse reactions.
Wang Huaqing also reminded that there are some special precautions for sequential vaccination. First, the object of this sequential immunization is people over 18 years old; the second is that the vaccinator must complete 2 doses of inactivated vaccination, and these 2 doses are the new coronavirus inactivated vaccine of Sinopharm Zhongsheng Beijing Company, Beijing Kexing Company, and Sinopharm Zhongsheng Wuhan Company; the third is to complete the whole process of 2 doses of vaccination, and the interval between sequential intensive immunization cannot be less than 6 months; the fourth is that there has been no enhanced immunization, that is, the 3rd injection has not been given. We must strictly grasp these conditions.
In addition, as with the precautions for receiving the new crown vaccine in the past, including understanding the relevant regulations of local vaccination before vaccination; do a good job of personal protection, and truthfully reflect their health status to the vaccination doctor, the vaccination doctor judges whether there are contraindications or delayed vaccination; after vaccination, you should stay for 30 minutes, and when there is a suspected adverse reaction related to vaccination, if the duration is longer and the symptoms are more serious, one is to report to the vaccination unit, and the other is to seek medical treatment in time.