After the polio vaccination, you should not take a bath until 24 hours afterwards. There are several reasons for this: first, there will be a needle hole after the vaccination, so it is necessary to prevent bacterial infection by soaking the needle hole when bathing; second, after the vaccination, there is a possibility of local rash and hard knots, which may not be judged if they are caused by infection; third, after the vaccination, the resistance and immunity of the whole body will change, and there may be a temporary low, if Bathing slightly improper care, may be infected by the pathogens of the environment, the emergence of colds, fever, etc., and itself after the polio vaccine may have a fever. Therefore, when it comes to prevention, it is also important to avoid other factors that cause reactions similar to those that occur after the vaccine.