In our increasingly globalized world, a single infected person can board a plane and spread a virus across continents. Mark Honigsbaum describes the history of pandemics and how that knowledge can help halt future outbreaks.

"How Pandemics Spread" is a lesson by Mark Honigsbaum (http://www.markhonigsbaum.co.uk) and was animated by Patrick Blower (http://www.patrickblower.com)

View the full lesson: http://ed.ted.com/lessons/how-pandemics-spread