If an infant takes a bath right after getting the hepatitis B vaccine, usually nothing will happen, as long as you are careful to keep the vaccination site out of the water while bathing and also take care not to catch a cold. Infants can be vaccinated against hepatitis B to prevent hepatitis B from occurring. Generally babies can take a bath after receiving the hepatitis B vaccine, and the act of bathing will not affect the effect of the vaccine, but when bathing babies, it is important to pay attention to the injection site not to get wet, so as not to cause local infections. In addition, we should also pay attention to the bath to avoid cold and cold, do a good job of cold and warm work, so as to avoid infants have a cold. Doctors usually recommend that babies should not take a bath on the day after hepatitis B vaccination, but if they do, it is usually not a big problem, as long as you pay attention to observe the baby’s physical condition, and if there is any abnormality, consult a doctor in time.