Invisible enemies. Part 2, Invisible armies.

Written and presented by Dr. Norman Swan, the series traces the worldwide history and geography of epidemic diseases past and present. "Part Two: Invisible Armies" On the transmission of disease around the world and from animals to humans; how dysentery, smallpox, malaria and yellow fever were carried by the slave trade into new territory; destruction of American Indians by white settlers' diseases; decimation of Hawaiians by venereal disease imported by Captain Cook's expedition; and the imminent disappearance of Amazonian Indian cultural identity.