It is possible to take a shower after the vaccination because the shower does not affect the effect of the vaccination. Even if the water touches the wound of the injection site, there is rarely any infection because the injection eye is relatively small and it is likely to heal within a few hours. It is recommended not to worry too much, but to observe the changes of the injection site in the next few days. If there is local redness, swelling, pain, etc., go to the hospital for treatment in time, or use hot towels to promote the remission of inflammation, or take anti-inflammatory drugs orally. Pay attention to the measurement of body temperature in these days, because many children are likely to have fever after vaccination, mostly low fever, which is the reaction after vaccination and does not need to be treated. If the body temperature exceeds 38.5℃, it is necessary to promptly reduce the heat treatment, and it is best to visit the hospital.