After two shots of vaccine, the antibody level will drop after six months. After the second shot of vaccine, take another shot six months later. The antibody level will increase significantly again. After the third injection, it is still at a high level for half a year. Therefore, the third injection is a promising method to enhance immunity.
The results of a "COVID-19 vaccine booster study" published in the international authoritative medical journal The Lancet on October 29th, 20021year/kloc-0 show that compared with only two injections and at least five months after vaccination, the risk of hospitalization and serious infection in COVID-19 is reduced by about 90%, and the risk of death in COVID-19 is also reduced by more than 80%. This protective effect is obvious shortly after the third injection, and it has similar effects on people of different sexes, ages and health conditions.
The research shows that the preventive effect of hospitalization in COVID-19 began to appear obviously about 6 days after the third vaccination, and the incidence and mortality of serious diseases also decreased obviously about 8-9 days after the third vaccination. At present, there are many experimental data showing that the booster injection of COVID-19 vaccine can improve the level of COVID-19 antibody, so it is absolutely necessary to give booster injection, which can help us to better prevent the COVID-19 epidemic. In order to take off the mask and end the epidemic as soon as possible, it is urgent to give COVID-19 vaccine a booster shot!
Is it necessary to get a third dose of COVID-19 vaccine? Let's look at this problem together. If the COVID-19 vaccine was originally designed with two shots, there would be no need for a third shot. If the COVID-19 vaccine was originally designed with three doses, the third dose must be injected. In other cases, whether the third dose of vaccine is needed is related to the validity of vaccination in COVID-19, as well as whether there is a decline in antibodies in the body and the world epidemic.
For example, the recombinant COVID-19 vaccine produced by zhifei, Anhui Province, and the COVID-19 vaccine were originally designed to have three shots in the whole process. Therefore, this COVID-19 vaccine must be injected with three injections, so there is no need for any controversy.
Regarding the validity period of COVID-19 vaccine in China, according to the current situation in China, there are few adverse reactions after the first and second injections, and the statistics of COVID-19 vaccine after the third intensive injection are not perfect.
As to whether the antibody in vivo has decreased after COVID-19 vaccine injection, many studies have shown that the antibody level will decrease after 6 months of vaccination, and the effect will also be greatly reduced. Therefore, after half a year, the third booster injection of COVID-19 vaccine is still needed.
Now, according to the current development of COVID-19 epidemic in the world, it is still very serious. Therefore, in order to prevent the spread of COVID-19 epidemic, the third dose of COVID-19 vaccine should be inoculated.