In general, it is recommended that children take a bath after vaccination for about 24-48 hours, as the injection site also needs some time to repair and grow together. If you take a bath immediately after the vaccination, the bath water may enter the child’s body through the injection site and cause local infection, even generalized fever and other uncomfortable symptoms. Therefore, to prevent your child from experiencing discomfort, you should not take a bath until at least 24 hours after the vaccination. It is also important to note that if your child has a cold, cough, runny nose, or other uncomfortable symptoms within 1 week before the vaccination, you should not give the vaccination immediately and should wait for 1 week after all uncomfortable symptoms have healed before considering a follow-up vaccination.