|aOriginally broadcast on the Discovery Channel in 2008.
|aDirector of photography, Adam Vardy ; editor, Christopher Nizza ; music, Extreme Music Library ; executive in charge of production, Margery Baker-Riker ; supervising producer, Nicole Rittenmeyer ; executive producer, Brett Alexander.
|aNarrator: Michael McGlone.
|aDiscusses a strange and deadly new virus in Asia, which claims the lives of nearly 50% of its victims. A team of virus hunters travels to Bangladesh, the latest front in the battle against the recently-discovered Nipah virus, to capture the puppy-sized bats that are believed to be the source of this frightening killer. Also traces the evolution of AIDS, SARS, West Nile, the Spanish flu and the avian flu -- all diseases that made the jump from animal to human, and then human to human.