This is a fun look at a serious problem - germ transmission. When I visit at the hospital I try to remember to wash my hands before going into a patient's room and after leaving. A nurse once told me that to get the best effect I should wash my hands for as long as it takes to sing happy birthday. After a few strange looks I now sing it in my head.
If we all celeberated more birthdays in our heads, fewer of us would get sick from unnecessary germ transmission. However, it seems that only 4 out of 5 people wash their hands after using the washroom. How do we get the 5th person on board with good hygiene practices? Here's a site with some good suggestions.