The epidemic in our country cannot be well controlled because there are still about 3 adults who insist on not being vaccinated. With these 3 adults active in society, the epidemic situation in our country will never get better. This has nothing to do with whether to get a booster shot or not. Reinforcing injections are only related to the individual's personal epidemic prevention effect. It is impossible to change the fact that the 3 adults are spreaders of the virus.