It is generally not recommended to take a bath for 24 hours after an infant has received a vaccination. On the one hand, if the child sees water at the eye of the needle after the injection, it may cause infection and even septicemia, which can cause pain to the child. So try not to take a bath 24 hours after the vaccination, you can choose to take a bath before the vaccination, which is more appropriate. Another reason why bathing is not recommended is that in winter, when the weather is cold, it is not easy to tell whether the fever is caused by the cold or by the vaccination, in case the child has a fever after bathing. Although fever caused by cold and fever caused by vaccination are both fevers, they are handled differently. Fever caused by vaccination usually lasts for a shorter period of time, but for fever caused by cold, the fever is higher and lasts longer, so symptomatic treatment is needed.