It is recommended to take a shower after 24 hours of vaccination. There will be localized pinhole after vaccination, if bathing too early, the sewage from bathing may contaminate the pinhole site, resulting in localized infection, which may lead to symptoms such as redness, swelling, heat, pain, etc., and in serious cases, pus may also be present. Some people may have adverse reactions after taking the vaccine, such as allergic reactions, and if they use hot water to take a bath, it will easily lead to accelerated blood circulation in the body, which may aggravate the adverse reactions. In addition to not being able to take a shower immediately after the vaccine, but also to avoid rubbing the eye of the needle, so as not to lead to infection, if the body has symptoms of discomfort, you need to go to the regular hospital in a timely manner.