Distributed by the CDC, these trading cards are great fun for the entire family, with such informative blurbs and pictures of anthrax, smallpox, mumps, pink eye victims, and MORE!

"No! I want Bowel Cancer!"
"Mommy, Dave wants Sickle Cell Anemia to trade!"

Suzy and Dave are trading cards later that day, "I'll trade you my gonorrhea for your syphilis!"

The main page (http://www.cdc.gov/od/oc/media/news4kids/tradecrd.htm), seems to not be linking the cards right now , so here's a couple direct ones:
http://www.cdc.gov/od/oc/media/news4kids/anthrax.pdf
http://www.cdc.gov/od/oc/media/news4kids/smallpox.pdf

Links from memepool.