Airport Bar
Early in the film, Beth is seen talking on the phone at the airport bar. She's clearly coming down with something, and doesn't know how bad it is. At the end of the call, we see the bar peanuts she touched and the camera zooms in on her handing her credit card off to the bartender to pay. This imagery shows us just how simple and insidious disease transmission can be.
Beth's Death
Beth is patient zero, and her death is a particularly disturbing scene. She becomes extremely tired with what seems like merely a cold, but then quickly succumbs to seizures that lead to her death. The image of this death early on in the film sets a disturbing tone and establishes the high stakes of the plot.
Day 1
The last scenes of the film take us back through the origins of the outbreak, showing just how it all began. Soderbergh puts the entire film in context with the imagery of how the virus emerged and was contracted and then spread by Beth.
Panic
Throughout the film, we see not only images of people coming down with the virus or discussing its transmission in offices, but also the chaotic public response to a global health crisis. People loot grocery stores, push and shove their way to the front of the line, rob Midwestern homes at gunpoint, and generally descend into mayhem at the first sign of anarchy.
