Alexander Fleming

(1881–1955) was a Scottish physician and microbiologist who discovered penicillin, the world’s first widely effective antibiotic. This groundbreaking discovery revolutionized medicine and has saved millions of lives by enabling the treatment of bacterial infections that were once often fatal. Fleming was awarded the Nobel Prize in Physiology or Medicine in 1945 for his contribution. His work marked the beginning of the antibiotic era and transformed modern healthcare. Known for his humility and scientific curiosity, Fleming emphasized the responsible use of antibiotics to prevent resistance. His legacy continues to shape medical science and public health worldwide.