The Plague That Wrecked Justinian's Empire - Constantinople, 541 AD

In 541 AD, a disease that had been sleeping in the wild rodent reservoirs of Central Asia for centuries reached the port of Pelusium in Egypt, climbed onto the grain ships of the Eastern Roman Empire, and within twelve months had killed a quarter of Constantinople, the capital of the wealthiest civilization on earth. The historian Procopius, who walked those streets, wrote the 1st detailed eyewitness account of bubonic plague in Western literature. In 2013, a team of paleogeneticists pulled DNA from a Bavarian mass grave and proved, with certainty, that the pathogen was Yersinia pestis, the same bacterium that would return eight centuries later as the Black Death. This is Episode four of Plagues: How Disease Changed History. Every episode covers the pathogen, the event, and the response, the biology, the people, and what each generation actually understood at the time. Watch the next video: Episode five covers the Black Death, when Yersinia pestis returned in 1347 and killed up to a 3rd of Europe. ▶ Watch next: The Black Death - Half of Europe in Four Years https://www.youtube.com/watch?v=Vd6KMXQkPfg 📺 Full playlist: Plagues — How Disease Changed History https://www.youtube.com/playlist?list=PLlIAFxS29648aq0TyVvsWh9HTO_qjDIGM Chapters: 0:00 Constantinople, Spring of 542 AD 6:59 Procopius, the Sixth-Century War Correspondent 13:41 Yersinia pestis, the Pathogen Up Close 19:33 Justinian, Belisarius, and the End of the Restoration 25:21 Aschheim 2013, How Paleogenomics Closed the Case 31:04 The Long Aftermath, Recurrence and the End of Antiquity 36:35 Quiz Time 38:23 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-medicine series. This channel does not represent any medical institution, public health agency, or academic institution. Every named pathogen, dated outbreak, death-toll estimate, and quoted statistic is sourced from peer-reviewed epidemiology, primary historical documents, and CDC / WHO records. Where death tolls or interpretations are contested by modern scholars, the range is presented honestly. This series presents the historical record — not medical advice. Always consult licensed medical professionals for health decisions.