Giving this movie a four is being generous. This movie is so slow despite the urgency of the situation. Boring, boring, boring. It was all I could do to stay awake. The story is disjointed and confusing. The stars are completely wasted on this really bad movie. If you want to see a good movie about contagion, watch "Outbreak" with Dustin Hoffman and Rene Russo. Another good movie about a mysterious health problem is "Coma" starring Michael Douglas and Genevieve Bujold. Or, watch a season of "ER" or "St. Elsewhere; or, better yet, read a book by Robin Cook. Avoid this film like it's the plague. Forgive me--a bad movie deserves a bad joke.