Does COVID-19 have to strengthen the needle? How long does it take to strengthen the needle in COVID-19?

1 Is it necessary to inject COVID-19 booster? If you can, try to inject.

1. After the second dose of vaccine was inoculated with a dose of COVID-19 booster for 6 months, the autoantibody level increased obviously, which was more than 10 times, and remained at a high level after 6 months of inoculation. If COVID-19 booster is inoculated in time, it will be able to resist COVID-19 vaccine for a longer time.

2. At present, the epidemic situation in COVID-19 is still going on, and COVID-19 mutant has been developed. Vaccination with COVID-19 booster needle can not only maintain a good immune level, but also effectively protect COVID-19 mutant, and reduce the severe disease rate and mortality rate of COVID-19 mutant such as Omicron.

3. People with weak immune function and people engaged in high-risk occupations who have completed immunization for more than 6 months to 12 months should be vaccinated as soon as possible to prevent cross-infection of COVID-19.

How long does it take to get a booster shot in COVID-19? The third booster needle must be separated from the second needle for more than 6 months, and vaccination is not allowed for less than 6 months.

According to the Technical Guide for Vaccination in COVID-19, the interval between the first dose of vaccine and the second dose of vaccine should be greater than or equal to three weeks, and the second dose of vaccine should be completed as soon as possible within eight weeks after the first dose of vaccine, and the interval between intensified injections should be six months or more than that of the previous vaccination in COVID-19.

At present, people who have been vaccinated with COVID-19 vaccine booster are those who have completed two doses of inactivated vaccine or one dose of adenovirus vaccine, so they can choose homologous vaccination, that is, the first two doses are inactivated vaccine and the third dose is also inactivated vaccine; Sequential inoculation is "heterogeneous inoculation" (that is, mixed inoculation), that is, the first two shots are inactivated vaccine, and the third shot is inoculated with adenovirus vector vaccine.

3 new coronary pneumonia booster needle/kloc-can you play under 0/8 years old? number

The Implementation Plan of COVID-19 Vaccine Intensive Immunization clearly points out that people 18 years old and above who have been vaccinated with two doses of COVID-19 vaccine for six months are the target population for intensive immunization.

Therefore, people under the age of 18 will not be vaccinated with COVID-19 vaccine at present. In addition, COVID-19 vaccine booster is not recommended for the following people:

1. People who are allergic to active ingredients, any inactive ingredients and substances used in the production of vaccines in COVID-19, or people who were allergic to similar vaccines before.

2. Those who had severe allergic reaction to the vaccine in the past (such as acute allergic reaction, angioneurotic edema, dyspnea, etc.). ).

3, suffering from uncontrollable epilepsy and other serious nervous system diseases (such as transverse myelitis, Guillain-Barre syndrome, demyelinating diseases, etc. ).

4. People with fever (underarm temperature ≥37.3℃), or patients with acute diseases, or patients with acute chronic diseases, or patients with serious chronic diseases that are not controlled.

5. Pregnant women.

Did COVID-19 have the fourth injection? At present, there is no plan to carry out the fourth injection in China, so people who have completed the third homologous vaccination do not need to carry out the fourth injection.

Because of repeated vaccination, the immune response will not improve endlessly, but will only inhibit the immune response concentrated in one subunit and the transfer of immune response to other subunits.

Moreover, people who have been vaccinated with 3 doses of recombinant protein vaccine or 2 doses of adenovirus vector vaccine do not need homologous vaccination or sequential vaccination for the time being.