The War on Germs: How Modern Medicine Was Born

Before the 1870s, most physicians did not believe germs caused disease. Surgeons operated in street clothes, childbed fever killed thousands of mothers, and the reigning theory blamed bad air. Then four people -- an English country doctor, a Hungarian obstetrician, a French chemist, and a German rural physician -- spent thirty years proving that invisible microorganisms were the real enemy. This is the story of how germ theory won, what it cost its earliest champions, and why the science that saved the most human lives in history almost lost the argument. Presented by Professor Erica — CISSP, CISM, PMP, M.S. Project Management, D.B.A. in progress. ▶ Watch next: The Patent Clerk Who Broke Physics: Einstein's Miracle Year 1905 https://www.youtube.com/watch?v=v0OTbpM--VU 📺 Full playlist: The Great Discoveries: How Science Built the Modern World https://www.youtube.com/playlist?list=PLlIAFxS2964-3v5fFwk4loCBPCYUW-8kY Chapters: 0:00 The World Before Germs 5:31 Edward Jenner and the First Vaccine 10:41 Semmelweis and the Handwashing Rejection 15:47 Louis Pasteur and the Germ Theory Foundation 21:06 Robert Koch and the Science of Proof 26:18 Pasteur's Vaccines and the Ethics Question 31:48 The Legacy -- What Germ Theory Actually Built 37:54 Quiz Time 40:23 Key Takeaways #explained #learn #2026 --- Disclosure The avatars and voices in this video are AI-generated. All content -- research, scripts, lesson design, and the custom video engine -- is created by a CISSP, CISM, and PMP certified professional with a Master's in Project Management, a B.S. in Information Technology, and a Doctorate in Business Administration in progress. This channel exists to make learning accessible and straightforward. Educational history-of-science series. This channel does not represent any university, research institution, or scientific body. The series presents the historical record of how scientific ideas were discovered, contested, and refined — including the mistakes, the politics, and the people who paid for being right too early. Where science and other domains intersect (religion, ethics, public policy), the series presents the arguments without endorsing a position.