Failure to vaccinate increases the likelihood of one’s own infection, and failure to vaccinate for some vaccines may also increase the likelihood of turning into a seriously infected person. The purpose of vaccines is to form antibodies in the body of the vaccinated person, thus preventing the infection of the corresponding disease. Therefore, the effect of not receiving vaccines on the public is that they lack the relevant antibodies and are significantly more likely to become infected during epidemics than those who have been vaccinated. Meanwhile, for some vaccines, such as the New Crown Vaccine, even if infection occurs after vaccination, the probability of becoming seriously infected is significantly lower than that of people who have not received the New Crown Vaccine, and at the same time, treatment of infection is more difficult for those who have not received the vaccine and the prognosis is worse, so it is recommended to receive the vaccine as early as possible, provided that the vaccine meets the conditions for receiving the vaccine.