Contagion is a 2011 thriller film directed by Steven Soderbergh that explores the outbreak and spread of a deadly virus across the world, and the efforts of scientists and government officials to contain it. The star-studded cast includes Matt Damon, Kate Winslet, and Jude Law.
The typeface utilized on the movie poster title is most likely Letter Gothic L Medium, created by Roger Roberson for IBM in 1962. It's a proprietary font and is available for purchase here.