In case of a cold, vaccination is not recommended during a cold. Vaccines are biological products made from pathogenic microorganisms, such as bacteria and viruses, and their metabolites, which are artificially detoxified, inactivated, or genetically modified, and are used to prevent infectious diseases. Usually, vaccines are divided into two types: live vaccines and dead vaccines. When vaccines are injected or taken orally into the body, the immune system will produce certain protective substances, during which the body may have fever and other discomfort, which are normal reactions and will naturally subside after 1-2 days, but if the fever does not subside or continues to rise, it is necessary to seek medical attention. If the body’s resistance decreases during a cold, vaccination may cause the body to become infected and not be able to play a protective role, and may also cause the cold to worsen, fever not to subside, or other toxic side effects. You should wait until a week after you have recovered from the cold and your resistance has returned to normal, then you can get vaccinated.