The determination of how long it takes for a newborn to heal from an infection is based on the extent of the infection in the newborn. First of all, if the newborn is cured within 1-2 weeks, if the infection is very mild, and the mental state and feeding condition is good. In this case, oral medications or small doses of intravenous antibiotics can be applied to provide good results, and the newborn’s infection will slowly improve within 1-2 weeks of treatment. The next situation is that it takes 2-4 weeks or even longer to heal, if the infection is severe and the newborn is in a poor state of mind, always trying to sleep, and has a serious case of sepsis. In this case, the newborn infection will be cured very slowly, taking more than 2-4 weeks, and in some cases even up to 8 weeks.