Informative illustrations, making it simple

As I've brought up a few times before, I've got an old buddy who's working as a professional illustrator. Obviously he's good at illustrating stuff, but his speciality is to making informative illustrations that can make it easier to understand something complex, or even make something simple even more simple to understand throught the use of a few well placed illustrations.

Well, in any case, that doesn't really matter because what drew my thoughts to the subject of illustrations helping in making some text more informative was a notice that had been put up in the vicinity of the Salaryman-Sunshine lair, giving out some basic instructions on what to do and what to not do to avoid getting the swine-flu. The illustration looked like this:

The black guy is already infected and the green guy seem to be begging for his life as the black guy is doing his utmost to infect him as well. Perhaps the green guy is a recent father or is the provider for a bedridden mother and cannot affort to get infected, something which the black guy couldn't care less about. Observe how bacteria is flowing from his mouth and how his hands are glowing unsanitary red.

I really liked this illustration but it didn't really give me any more information than to stay away from the infected, but I guess that's a start and I'll be on the lookout for red hands...