For citizens who have not yet received the booster shot of the new coronary pneumonia vaccine, sequential vaccination means that there is a new way of booster shot. Luo Chao, head of the Immunization Planning Institute of the Harbin Center for Disease Control and Prevention, answered questions about the concept of sequential vaccination and its characteristics.
Luo Chao said that sequential immunization is a new way of boosting the new crown vaccine. Sequential immunization refers to the alternating vaccination between vaccines of different technical routes. Taking the new coronavirus vaccine as an example, if two doses of inactivated vaccine have been previously vaccinated, and adenovirus vector vaccine or recombinant protein vaccine is used when a booster shot is required, it is called “sequential immunization”. After the implementation of the sequential booster immunization strategy, there is another option for the target population who have completed the whole process of inoculating inactivated vaccines. Sequential booster immunizations can also be performed with recombinant protein vaccines or adenovirus vector vaccines.
What is the difference between a homologous boost and a sequential boost? Luo Chao explained that the two immunization strategies are equally effective in preventing new coronavirus pneumonia and reducing the occurrence of severe illness and death. The advantage of sequential booster immunization is that alternate vaccination of the two technical routes can complement each other’s advantages. For those with severe side effects after the previous vaccination, another vaccine can be selected. This immunization program has also passed a large number of vaccines. Experimentation, can be trusted in terms of security.
If you want to carry out sequential booster immunization, you must meet the four requirements of age and vaccination dose. Luo Chao said, first, it must be a group of people over 18 years old. Second, 2 doses of inactivated vaccines must be completed, and these 2 doses of inactivated new coronavirus vaccines from Sinopharm Zhongsheng or Beijing Kexing. Third, 2 doses of vaccination should be completed throughout the whole process, and the interval between vaccinations should not be shorter than 6 months. Fourth, there was no booster immunization, that is, the third shot was not given. These conditions must be strictly grasped.
At this stage, the new coronavirus vaccination used in “sequential immunization” implements a free policy for residents, and the vaccine and vaccination costs are borne by the medical insurance fund. Whether the three shots are inactivated vaccines or sequential immunization depends entirely on voluntary and specific physical conditions.
From: Harbin Radio and Television Omnimedia News Center reporter Triumph
Source: Harbin News Comprehensive Channel