3. The Introduction of Penicillin (1928)
In 1928, Alexander Fleming‘s accidental discovery of penicillin revolutionized the treatment of bacterial infections. Penicillin became the first true antibiotic, quickly saving countless lives that might have been lost to diseases like pneumonia and sepsis. This breakthrough ushered in the antibiotic era, inspiring a wave of research that led to the development of many other life-saving antibiotics. According to the NIH, the impact of penicillin continues to shape modern medicine and public health worldwide.
