Whats the name of this movie?

a few years back i saw this sundance channel movie about a guy who lets his wife go to work and then he hears in the news about an airborne disease that is spreading so he runs back home and seals himself off from the outside and when his wife comes home he wount let her in. the plot twist at the end is the government ends up killing the guy because his home became a breeding ground for the disease. ive been thinking for a while and cant remember the name of this movie.