What important advances in medicine happened during World War 2?

During World War II, several key advances in medicine emerged, significantly impacting healthcare. One notable development was the mass production and widespread use of antibiotics, particularly penicillin, which drastically reduced infection rates and improved survival outcomes for wounded soldiers. Additionally, advancements in trauma care and surgical techniques were refined due to the high number of injuries, leading to better practices in treating battlefield wounds. The war also accelerated research in blood transfusion and storage, paving the way for modern transfusion medicine.