John Snow and the 1854 Broad Street cholera outbreak

In 1854, cholera struck Broad Street in London. One scientist, John Snow, thought he could finally prove how this elusive killer spread. From our free online course, “PredictionX: John Snow and the Cholera Epidemic of 1854”: — Subscribe to our channel: — Sign up for emails about new courses: — HarvardX courses on edX: — Harvard University's online courses: HarvardX empowers the faculty of Harvard University to create high-quality online courses in subjects ranging from computer science to history, education, and religion.