Penicillin was discovered from a contaminated petri dish in 1928
Alexander Fleming noticed mold on a staphylococci plate killing nearby bacteria. That accidental contamination became the starting clue to penicillin, the first true antibiotic era drug.
Mass production in the 1940s turned once-deadly infections into treatable illnesses for millions. World War II urgency accelerated factories, purification, and clinical use worldwide.
The petri-dish story is luck plus sharp observation. It also warns that antibiotic power is not endless — resistance rises when those miracle molecules are overused.
Shahzad Mahota
Penicillin was discovered from a contaminated petri dish in 1928
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