The antibody of COVID-19 vaccine increased about 5 times after intensive injection 1 month (the immunity of COVID-19 vaccine decreased after one injection).

After intensive injection of 1 month, COVID-19 antibody increased about 5 times.

Is COVID-19's reinforcing needle useful?

At present, according to the research results at home and abroad, the antibody level of COVID-19 vaccine has decreased with time. By inoculating "booster shots" and increasing the vaccination dose, the neutralizing antibodies that have been gradually reduced can grow or rebound rapidly.

It was found that the neutralizing antibody level detected by COVID-19 inactivated vaccine 1 month after booster immunization was about five times as high as that after the second dose 1 month, and some of them were even higher.

Is COVID-19 vaccine "booster shot" free?

Immunization is still free.

Vaccination for key populations and high-risk populations shall be implemented in principle according to units or industry organizations. Other people who need to strengthen immunization can pay attention to the relevant information of the local disease control department or the Health and Health Commission, or consult the vaccination units within their jurisdiction to understand the vaccination arrangements.

In view of the problem of COVID-19 vaccination for people aged 3 to 1 1, parents should know the knowledge of vaccine and disease, vaccination process and children's situation before their children are vaccinated with COVID-19 vaccine. Inoculation should be conducted on the basis of informed consent. If the child is psychologically nervous, parents should do a good job of counseling. Children should be observed for 30 minutes after vaccination to avoid strenuous exercise.

Parents should report any suspected adverse reactions related to vaccination in time. He said that children in this period may have to be vaccinated with other vaccines. It should be noted that the interval between COVID-19 vaccine and other vaccines is more than 14 days. However, if rabies vaccine and tetanus vaccine need to be vaccinated because of bites, the interval can be ignored.

Wu Liangyou, deputy director of the CDC of the National Health and Wellness Commission, said that according to the arrangement of the joint prevention and control mechanism in the State Council, all localities are starting vaccination work for people aged 3 to1/kloc-0, and so far more than 3.53 million doses have been vaccinated. In the next step, the National Health and Wellness Commission will continue to actively guide people aged 3 to 1 1 without taboos to vaccinate all the vaccines in accordance with the principles of informed consent and voluntariness, and strive to complete the whole vaccination before the end of February.