Complex sentence: During the 1950's there were outbreaks of omphalitis that then led to anti-bacterial treatment of the umbilical cord stump as the new standard of care ach hospital/birthing center has its own recommendations for care of the umbilical cord after delivery.
Split into simpler sentences: During the 1950's there were outbreaks of omphalitis that then led to anti-bacterial treatment of the umbilical cord stump as the new standard of care. However, each hospital/birthing center has its own recommendations for care of the umbilical cord after delivery.