The message I got from the film is that when people give in to despair, they're prone to take actions that may have catastrophic consequences. The virologist h

The message I got from the film is that when people give in to despair, they're prone to take actions that may have catastrophic consequences. The virologist has lost his faith (in whatever he may have had faith in) and has become a nihilist. nihilists are the most dangerous sorts of people, as they're likely to take any action at all, unconstrained by morality, ethics, or common sense.