In the last scene from the movie, the neighbor, who is a pilot, is shown going thru the airport to get on his flight. They then show him as a dot, connecting to other dots; that are connecting to other dots. He is flying a transatlantic flight, so after it lands in Paris, more dots. Pretty soon the globe is engulfed, and it happens quickly.
It's only a movie, but this one depiction of how a virus can travel extensviely, even jump continents, in a very short time stuck with me; and, I've been thinking a lot about it recently.
Another movie that was done with considerable cooperation from the CDC itself was “Contagion”. If you haven’t seen it you should but I will say you’ll wash your hands a lot more after seeing it!