Chance: Fleming's mould contamination was accidental. He almost threw it away!
Individuals: Fleming discovered, but Florey and Chain developed it. All three won Nobel Prize (1945).
War: WW2 created urgent need and government funding. Without war, development might have taken decades longer.
Government: US and UK governments invested millions. No private company could have afforded it.
Technology: Industrial fermentation allowed mass production — science alone wasn't enough.
This deep dive covers Why Is Penicillin a Key Case Study? within Penicillin for GCSE History. Revise Penicillin in Medicine Through Time for GCSE History with 8 exam-style questions and 15 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 3 of 14 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Penicillin
In which year did Alexander Fleming discover penicillin?
Which two scientists purified penicillin and made it usable as a medicine?
Quick recall flashcards
What is an antibiotic?
A substance produced by a living organism (like the Penicillium mould) that kills bacteria. Penicillin was the first antibiotic — unlike magic bullets, it was natural, not synthetic.
Who developed penicillin for use?
Howard Florey and Ernst Chain (Oxford, 1939-41)