Recently Xi'an epidemic again, the epidemic transmission chain caused by the extension of the epidemic, as a tourism city of Xi'an although in the tourism off-season but still facing huge pressure, in our country vaccination work has achieved phased results, although most of the areas have completed double vaccination, but in the face of the epidemic virus, still need an insurance to continue to improve the fight against the epidemic, a few days ago, Tianjin's third dose of vaccination work has been put on the agenda, will be launched in an orderly manner, then, the three injections of vaccine or not? When to vaccinate? What do I need to pay attention to before playing? This article will explain it for you.
<h1>Do I want to get three shots of the vaccine? </h1>
From the perspective of the international situation, the world has entered a new round of infection peak, and a few developed countries such as the United States have approved the third dose of enhanced vaccine.
From the perspective of domestic vaccines, the main vaccination of chinese people is the new crown inactivated vaccine of Sinopharm and Kexing, and these two companies have recently reported the clinical research results of the third vaccine. The results showed that the third dose of the vaccine did not have serious adverse reactions and was still as safe as the first and second doses; at the same time, after the third dose, the subjects' neutralizing antibody levels increased rapidly and significantly, indicating that the vaccine protection effect may be greatly improved.
These studies show that the COVID-19 vaccine booster is feasible.

<h1>When is the third injection given? </h1>
At the plenary meeting of the Zhongguancun Forum held on September 25, in response to the question of when to vaccinate the third dose of the new crown vaccine, Xie Xiaoliang, chair professor of Peking University Li Shau Kee, said in a speech that after the second dose, 6 months, 9 months, and 12 months after the third injection, the effect was almost the same, and it could still awaken immune memory within 7 days and effectively resist the Delta variant. "The third dose is best given 6 months after the second dose."
In short, the third dose of the new crown vaccine is not in a hurry for the time being, the public can complete the first and second doses of vaccination first, and do a good job of daily protection, patiently waiting.
<h1>What do I need to pay attention to before the third shot? </h1>
I. The following six types of high-risk groups of new crown pneumonia infection and key positions to ensure the basic operation of society are recommended to give priority to vaccination at the first time:
1. First-line customs inspection and quarantine personnel at ports involved in imported cold chain goods, loading and unloading, handling, transportation and other related personnel at ports;
2. International and domestic transportation employees, border port staff facing a high risk of overseas epidemic situation;
3. Medical and health personnel;
4. Personnel who go abroad for work and study for business or private reasons;
5. Relevant personnel in public security, fire protection, community workers, and government agencies and institutions who directly provide services to the public;
6. Water, electricity, heating, coal, gas related personnel, transportation, logistics, pension, sanitation, funeral, communication related front-line personnel, etc.
Second, you can't mix it up
Some people will ask: After 1 dose of inactivated vaccine, can I change to a recombinant subunit protein vaccine? After two doses of inactivated vaccine, can I still get a recombinant subunit protein vaccine?
Due to the different vaccine production processes, inactivated vaccines can only be "mixed" with inactivated vaccines. At present, there is only one manufacturer of the approved recombinant novel coronavirus vaccine (CHO cells), and there is no "replacement vaccination and mixed beating".
According to the Technical Guidelines for COVID-19 Vaccination (First Edition), it is recommended to complete the full process of vaccination with the same company's COVID-19 vaccine at this stage. In the event of special circumstances such as vaccines that cannot continue to be supplied, recipients are vaccinated in different places, and the whole process of vaccination cannot be completed with the new crown virus vaccine of the same enterprise, the same type of vaccine products of other enterprises can be used to complete the vaccination.