{"id":3761,"date":"2018-06-30T13:31:43","date_gmt":"2018-06-30T13:31:43","guid":{"rendered":"https:\/\/schoolshistory.org.uk\/topics\/?page_id=3761"},"modified":"2026-05-28T16:16:26","modified_gmt":"2026-05-28T16:16:26","slug":"alexander-fleming-and-the-discovery-of-penicillin","status":"publish","type":"page","link":"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/fight-against-infectious-disease\/alexander-fleming-and-the-discovery-of-penicillin\/","title":{"rendered":"Alexander Fleming and the discovery of Penicillin"},"content":{"rendered":"<p><strong>Alexander Fleming discovered Penicillin. Penicillin was discovered by chance in his laboratory. The experiments surrounding the discovery of Penicillin led to it being recognised as potentially valuable. Fleming published his findings on the discovery and properties of Penicillin. These findings were later used by Florey and Chain to develop Penicillin into a mass produced medicine. During the Second World War the US Government financed work on the production of Penicillin as it had the potential to save many soldiers lives.\u00a0<\/strong><\/p>\n<p><a href=\"https:\/\/schoolshistory.org.uk\/topics\/wp-content\/uploads\/2018\/06\/icon_fleming_timemagazine.jpg\"><img decoding=\"async\" class=\"alignleft wp-image-3950 size-full\" src=\"https:\/\/schoolshistory.org.uk\/topics\/wp-content\/uploads\/2018\/06\/icon_fleming_timemagazine.jpg\" alt=\"Alexander Fleming. His discovery of Penicillin was a major medical breakthrough\" width=\"196\" height=\"256\" \/><\/a><\/p>\n<div style=\"clear: both;\"><\/div>\n<h2>Alexander Fleming&#8217;s research and the discovery of Penicillin<\/h2>\n<p><span style=\"font-family: Verdana, Arial, Helvetica, sans-serif;\">Alexander Fleming was a scientist who was working on staphylococci. These are the germs that make wounds go septic. Whilst cleaning the culture dishes one day he saw a mould growing on one of the plates. This in itself was not unusual, but on this occasion there were no germs growing around the growth. Curious as to what caused the germs to stop growing, and eager to find out what the mould was, Fleming grew more of it and experimented. He found that the mould acted against anthrax and diphtheria without creating any harmful side effects. This was the first occasion that an antibiotic drug had been developed (an antibiotic is something naturally produced by living organisms, rather than being a chemical compound). The new drug was a member of the penicillin notatum family, known popularly as penicillin.<\/span><\/p>\n<p><span style=\"font-family: Verdana, Arial, Helvetica, sans-serif;\">Fleming however did little with his discovery. It wasn&#8217;t until 1935 when researchers Florey and Chain at Oxford University saw Fleming&#8217;s research papers that the drug was developed further.<\/span><\/p>\n<p><a href=\"https:\/\/schoolshistory.org.uk\/topics\/\">Schoolshistory home<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/teaching-resources\/\">History teachers resources<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/timelines-medicine\/\">Medical History Timelines<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/british-history\/modern-britain\/liberal-reforms\/\">Liberal Reforms<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/modern-medicine-c1900-to-the-modern-day\/the-welfare-state\/\">Welfare State<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/modern-medicine-c1900-to-the-modern-day\/nhs-a-history\/\">The NHS<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/fight-against-infectious-disease\/alexander-fleming-and-the-discovery-of-penicillin\/\">Alexander Fleming<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/fight-against-infectious-disease\/florey-and-chain-and-the-development-of-penicillin\/\">Florey and Chain develop Penicillin<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/modern-medicine-c1900-to-the-modern-day\/dna-and-its-impact-on-medicine\/\">DNA and it\u2019s impact on modern medicine<\/a><\/p>\n<p><a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/\">Medicine Through time<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/medicine-through-time-teachers-resources\/\">Resources for Medicine Through Time<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/prehistoric-medicine-how-did-stone-age-man-heal\/\">Prehistoric Medicine<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/ancient-egyptian-medicine\/\">Ancient Egyptian Medicine<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/medicine-in-ancient-greece\/\">Ancient Greek Medicine<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/medicine-in-ancient-rome\/\">Medicine in the Roman Empire<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/medieval-medicine-was-it-all-plagues-and-pestilence\/\">Medieval Medicine<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/medicine-during-the-renaissance\/\">Renaissance Medicine<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/public-health-in-the-industrial-revolution\/\">Public Health in the Industrial Revolution<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/fight-against-infectious-disease\/\">Fight against infectious disease<\/a>\u00a0\u2013\u00a0<a href=\"https:\/\/schoolshistory.org.uk\/topics\/medicine-through-time\/modern-medicine-c1900-to-the-modern-day\/\">Modern Medicine<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alexander Fleming discovered Penicillin. Penicillin was discovered by chance in his laboratory. The experiments surrounding the discovery of Penicillin led to it being recognised as potentially valuable. Fleming published his findings on the discovery and properties of Penicillin. These findings were later used by Florey and Chain to develop Penicillin into a mass produced medicine.&hellip;&nbsp;<\/p>\n","protected":false},"author":1,"featured_media":3950,"parent":3759,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":100,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"class_list":["post-3761","page","type-page","status-publish","has-post-thumbnail","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Discover how Alexander Fleming&#039;s accidental discovery of Penicillin revolutionized medicine and saved countless lives during WWII.\" \/>\n\t<meta name=\"robots\" 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Fleming's Accidental Discovery Led to Penicillin's Medical Breakthroughs","The Story Behind Penicillin: Fleming's Chance Find in the Lab","Discovering Penicillin: Fleming's Unexpected Mould Moment","From Mould to Medicine: Fleming and the Birth of Antibiotics","Alexander Fleming's Surprise Discovery Changed Medicine Forever"],"descriptions":["Discover how Alexander Fleming's accidental discovery of Penicillin revolutionized medicine and saved countless lives during WWII.","Learn the fascinating story of Alexander Fleming's discovery of Penicillin, from mold to life-saving antibiotic.","Uncover the detective work behind Fleming's chance discovery of Penicillin and its impact on modern medicine.","Explore how Fleming's chance finding of mold led to the development of Penicillin, transforming healthcare forever.","Find out how Fleming's accidental discovery of Penicillin changed the course of medical history and saved millions during 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