Researchers from the University of Arizona swabbed shopping cart handles in four states looking for bacterial contamination. Of the 85 carts examined, 72% turned out to have a marker for fecal bacteria.
The researchers took a closer look at the samples from 36 carts and discovered Escherichia coli, more commonly known as E. coli, on 50% of them — along with a host of other types of bacteria.
Reusable shopping bags also harbor nasty bacteria since people don't wash them enough. The grocery store has more germs than a hospital emergency room.