Henan will launch a series of COVID-19 vaccines to strengthen immunization

2022-05-13 0 By

On February 19, the reporter learned that according to the requirements of the national plan and the vaccine group of the Provincial Epidemic Prevention and Control Headquarters, Henan will carry out sequential immunization strengthening on the basis of the same-origin strengthening of COVID-19 vaccines, to ensure that the target recipients “should be fully received” and to establish the herd immunity barrier in the whole province.What is sequential booster immunization?According to CDC experts, sequential enhanced immunization is commonly referred to as heterogeneous enhanced immunization. For example, inactivated vaccine is used before, and if inactivated vaccine is selected, it is homologous enhanced immunization, while non-inactivated COVID-19 vaccine is selected, so it is called sequential enhanced immunization.It is reported that the sequential immunization of Henan can be selected for the recombinant protein vaccine of Anhui Zhifei Dragon Koma Co., Ltd. or adenovirus vector vaccine of Tianjin Kangsinuo Company, the implementation of 1 dose sequential enhanced immunization.At the same time, homologous booster immunization can also be carried out with the original technology route vaccine.Experts emphasized that at present, the target of sequential enhanced immunization is the people aged 18 and above who have completed the full course of inoculation with novel Coronavirus inactivated vaccine of Sinopharm Beijing Co., LTD, Sinopharm Beijing Co., LTD and Sinopharm Wuhan Co., LTD for 6 months and have not completed homologous enhanced immunization.”The 23 vaccination clinics in our district will be ready by next Monday.”Zhengzhou Erqi District CENTER for Disease control and Prevention immunization planning section chief Wang Heng said.On February 19, after the announcement that Henan will carry out the sequential immunization of COVID-19 vaccine, many netizens left comments asking, does the sequential immunization mean the fourth dose?”This is just an extra dose of COVID-19 booster, not a fourth dose.”Wang Heng, director of the immunization planning Department of Erqi District CDC in Zhengzhou, said that previously, China’s COVID-19 booster vaccination was carried out with homologous booster, which means the same vaccine route as before was selected for booster vaccination, while sequential booster vaccination was heterogeneous vaccination, which means other production routes can be selected.It is understood that there are three production routes for COVID-19 vaccines in China: inactivated vaccines, adenovirus vector vaccines and recombinant protein vaccines.People who have already received booster shots do not need to be vaccinated again.For some people who need to get a booster shot, there is more than one choice, which can choose homologous strengthening or sequential strengthening of immunity.The booster shot had to follow the same route as the previous vaccine technology, but now it can be different. Why?Shao Yiming, a member of the vaccine research and development team under the Joint prevention and control Mechanism of The State Council, said that according to previous experience in infectious disease prevention and control, a single vaccine can deal with conventional viruses, but for viruses that are cunning and good at mutating, different vaccines can be used in “joint operations”.”Sequential immunization has two advantages.”Shao Yiming explained: one is that different vaccines can complement each other’s advantages, and the other is that side reactions can be reduced for some people. Because different people have different constitutions, some people may have more serious side reactions to a certain vaccine, so the occurrence of side reactions can be reduced by changing the vaccine.Chinese center for disease control and prevention immune planning chief expert, Mr Wang said that the order of the immune objects have three conditions, it is people over the age of 18, the second is 2 through dose of inactivated vaccine vaccination, the vaccine is raw in its Beijing sinovac biotech company, Beijing, national medicine in wuhan company these three will be coronavirus inactivated vaccine in one of them.Third, there was no enhanced immunity, that is, the third injection was not hit.At present, Jiaozuo city has taken the lead in launching the sequential enhanced immunization, and Zhengzhou city will carry out the sequential enhanced immunization tomorrow.Source: Henan Daily Editor: Qiming Editor: Sun Xu Content Director: Song Tao Chen Ping To the light of the wind