Invisible enemies. Part 3, Epidemics - products of progress.

Written and presented by Dr. Norman Swan, the series ranges worldwide in order to map the history and geography of epidemics past and present, using a rich variety of visual material. "Part Three: Products of Progress" On the relationship between epidemics, society and social upheaval; the importance of trade routes in carrying the plague virus; history of quarantine; present day plague control in the U.S.A.; and the world history of cholera.