Program Description:Even as you read these lines, your body is under attack. The enemy is patient, adaptable, invisible and potentially fatal. Sometimes called “Nature’s smallest killers,” or “ghost killers,” viruses cause everything from the common cold to HIV and have launched epidemics more devastating than any war or natural disaster. All about Viruses explains how these microscopic parasites operate and how our immune systems defend against them. We will also take a look at new scientific strategies in the war against viruses, including efforts to turn some of these invaders into cures for disease.