|acexecutive producer, Nancy Walzog ; produced by Tapestry International Productions, Ltd. for the Discovery Channel ; Narrators: Thom Kikot, Leyna Juliet Weber.
|aOriginally broadcast as a segment of Assignment discovery.
|a"Even as you read this, your body is under attack. Your enemy is patient, adaptable, potentially deadly, and invisible. Viruses range from the common cold to HIV and have caused epidemics more decimating than war."--Container.