Limits RegistryPUBLIC RECORD
Limits RegistryAlexander Fleming discovered the antibacterial effect of Penicillium mold in September 1928 at St Mary's Hospital in London, after noticing that a contaminating mold had killed surrounding Staphylococcus bacteria on a culture plate. Howard Florey and Ernst Chain later purified and mass-produced it in the early 1940s, and the three shared the 1945 Nobel Prize in Physiology or Medicine.
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Alexander Fleming discovered the antibacterial effect of Penicillium mold in September 1928 at St Mary's Hospital in London, after noticing that a contaminating mold had killed surrounding Staphylococcus bacteria on a culture plate. Howard Florey and Ernst Chain later purified and mass-produced it in the early 1940s, and the three shared the 1945 Nobel Prize in Physiology or Medicine.
The date and circumstance of the discovery of penicillin's antibacterial properties, marking the identification of the first modern, mass-producible antibiotic compound.
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Limits Registry. LR-FIRST-DOCUMENTED-ANTIBIOTIC-PENICILLIN. Discovery of penicillin, the first modern antibiotic. 2026.