Shopping Cart Handles Have More Germs Than Public Restrooms which is why many places of business are setting up a cheap and easy to use moist towellette station just inside the doors of their markets. Its a simple thing to grab a wipe and murder all those nasty germs.
Its not that people didn't know shopping carts are germ-machines, its just that there wasn't a news story proclaiming what we already knew.
And now that you know, protect yourself and murder some germs the next time you go shopping.