If the infant is suffering from enteritis and has not been vaccinated, it is recommended that the vaccination time be postponed. If the vaccine has been administered, the infant should be observed and if there are any symptoms, medical attention should be sought as soon as possible. In general, if an infant is suffering from enterocolitis, it is not recommended to vaccinate until it is cured, because during the period of illness, the infant’s immunity decreases, and if a vaccine is administered at this time, the vaccine will activate the immune system, which may exacerbate the enterocolitis. A short delay in vaccination will not affect the effectiveness of the vaccine itself. If an infant is suffering from enterocolitis but has already been vaccinated, it is recommended to observe the infant’s condition, such as any aggravation of symptoms such as severe diarrhea, fever, crying, etc. If the above symptoms occur, it is recommended to seek prompt medical treatment.