It's cute, it's simple and it works. The UK Department of Health is running a campaign "Catch it, Bin it, Kill it." to reduce infections spread by coughs and colds. I remember the "coughs and sneezes spread diseases" poster of my childhood". Well this is the latest version.
It is a wonderful good example of targetted communication. The Dirtie Bertie comic strip tells a relevant story and you can download the strip in classroom sized handout. On the website there is also a nursery rhyme mp3 to download for a singalong and you can get a transcript of the words.
While the germs don't need to be spread, this communication package certainly does deserve so.