After taking a bath after vaccination, if the body does not have any uncomfortable symptoms, there is no need for special treatment, and there is no need to worry excessively. It is generally recommended to take a shower after 24 hours after vaccination, in order to prevent local infection at the injection site, because there will be local pinholes after vaccination, and generally the pinholes can be completely closed in about 24 hours, so if you take a shower too early, it is easy to increase the risk of bacterial infection. If symptoms such as local redness, swelling, pain and soreness appear, some antibiotic ointment can be applied. If fever appears, you can also use some antipyretic and analgesic drugs as appropriate. The vaccination itself may cause some local redness, swelling and hard nodules, which are normal vaccine reactions. The immunity of human body is low after vaccination, if you take a bath, the temperature of hot water or get cold may trigger the risk of bacterial infection or viral infection.