A video from the set of World War Z shows a zombie attack and infection scene from the movie. This not only gives us a better idea of the type and speed of the zombies we'll see in this movie, but we also get to see how quickly the infection spreads.
“The story revolves around United Nations employee Gerry Lane (Pitt), who traverses the world in a race against time to stop the Zombie pandemic that is toppling armies and governments and threatening to decimate humanity itself. Enos plays Gerry’s wife Karen Lane; Kertesz is his comrade in arms, Segen.”
World War Z is directed by Marc Forster and stars Brad Pitt, Mireille Enos, Daniella Kertesz, James Badge Dale, and Matthew Fox. The movie is currently filming and is scheduled for release on December 21, 2012.