China News Service, February 19. The State Council's joint prevention and control mechanism held a press conference on the 19th to introduce the situation of epidemic prevention and control and vaccination.

According to the meeting, the National Health Commission has begun to deploy sequential booster immunizations.

What is sequential immunization?

What precautions should be taken when receiving sequential booster immunizations?

Wang Huaqing, chief expert of the immunization program of the Chinese Center for Disease Control and Prevention, answered.

Conference site.

Photo by Ren Jing

  Wang Huaqing said that sequential immunization is an immunization strategy adopted by vaccines of different technical routes according to a certain vaccination time interval and the number of doses to be vaccinated.

"Sequential immunization is also a process of continuous improvement of our immunization strategy. It is a decision based on scientific evidence." Wang Huaqing said that in the process of formulating a sequential immunization strategy, on the one hand, its protective effect is considered, on the other hand On the one hand, it is to consider further reducing the risk of serious adverse reactions.

  What precautions should be taken for vaccination?

Wang Huaqing introduced that the first one is in the selection of objects.

Regarding the objects of this sequence of immunization, the first is the people over 18 years old, and the second is to complete 2 doses of inactivated vaccine, and these 2 doses are vaccinated by Sinopharm Zhongsheng Beijing Company, Beijing Kexing The company and Sinopharm Zhongsheng Wuhan Company's new coronavirus inactivated vaccine.

The third is to complete 2 doses of vaccination throughout the process, and the interval between sequential booster immunizations cannot be shorter than 6 months.

The fourth is that the booster immunization has not been carried out, that is, the third injection has not been played.

  In addition, the same as the precautions for vaccinating the new crown vaccine in the past, including understanding the relevant regulations of local vaccination before vaccination, because it is still an epidemic period, during this process, when you go to get vaccinated, you must do a good job of personal protection, including When vaccinating, you should truthfully report your health status to the inoculation doctor, who will judge whether he has contraindications or some delayed vaccination.

  Wang Huaqing suggested that people should be observed for 30 minutes after vaccination. When adverse reactions suspected to be related to vaccination occur, if the duration is longer and the symptoms are more serious, firstly, report to the vaccination unit, and secondly, seek medical treatment in time.