It is false that vaccines can no longer be administered. The role of the vaccine is to enter the body through the injection of immunogenic substances, stimulate the body to produce the relevant immune response, so as to produce high levels of antibodies and some memory cells, in order to wait for the next time the real pathogens enter the body, the body can quickly produce a large number of antibodies, so as to eliminate the pathogens. Nowadays, there are a lot of rumors propagating the side effects of vaccination. In fact, the benefits of vaccination outweigh the disadvantages, and vaccination can effectively protect the human body, especially susceptible people, to obtain specific immunity, thus establishing a natural barrier against epidemics in the human population. Without vaccination, this is likely to make people more susceptible to various diseases. Although vaccination is good, there are some groups of people who are not suitable for vaccination, such as: patients with colds, immunodeficient people and people with allergies, these people must consult their doctors to prepare for the vaccination before vaccination. At present, all the vaccines can not achieve 100% protection against diseases, but it is still the best means of preventing diseases, in the case of physical and economic conditions allow, it is recommended to receive the relevant vaccines in a timely manner to protect their own health. If you feel unwell after vaccination, you should give feedback to your doctor in time to avoid adverse consequences.