"Span3span New Coronavirus Vaccination Technical Guidelines (First Edition)" stipulates that, on the basis of full notification, one dose of vaccine can be given to patients or infected persons with previous new coronaviruses. Does this mean that the antibody is only valid for six months?
Once the antibody is produced in the body, how long can it last? Let's take a look at the interpretation of experts.
Q: Recovered patients can be vaccinated after 6 months. Does it mean that the antibody protection period is only 6 months?
Chinese Center for Disease Control and Prevention Deputy Director of Immunization Planning Center An Zhijie: The existing data shows that after the new coronavirus infection, new coronary pneumonia rarely occurs within six months. But it does not mean that after six months, he will definitely not be protected, but we have no longer observation data. So we are suggesting temporarily. If he has a need, he can get another dose if he fully informs him. This is the same as the international recommendation.
Q: Recovered patients or undergoing clinical antibody test after vaccination , does the antibody positive mean that it has gained immunity?
An Zhijie, deputy director of the Immunization Program Center of the Chinese Center for Disease Control and Prevention: Now our routine clinical testing reagents and testing antibodies are all used to diagnose whether the patient is infected or not, but we are not used to Used to evaluate the protective effect of vaccines. Because coronavirus has many proteins on its surface, all of these proteins may trigger the production of antibodies, so some of them are really useful.We are called neutralizing antibodies, which can neutralize the virus; and some proteins can trigger the production of antibodies, which can be detected and prove that he is infected, but this antibody has no role in neutralizing the virus. It can only prove that you are a patient and have been infected. , But it does not prove that you must be immune.
Q: How do I know if the vaccine I received will protect me?
An Zhijie, deputy director of the Immunization Program Center of the Chinese Centers for Disease Control and Prevention: If it is tested whether it is effective, the laboratory conditions it needs are different from our routine clinical antibody testing, because It needs to use live virus, and it needs to use a P3 (Biosafety Protection Level 3) laboratory to detect the neutralizing antibodies produced after you are vaccinated. When this vaccine was evaluated in clinical trials, it was approved by the Food and Drug Administration. After the vaccine has been vaccinated from the population and level, we have data that more than 90% of the vaccine will produce this neutralizing antibody. After this vaccine is on the market, it has been used in the general population, and it is generally not recommended to do routine testing for this antibody.
column editor: text editor Qin Hong: Dong Si Yun thematic map Source: Xinhua News Agency Picture Editor: Su Wei
Source: Author: CCTV news client
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