I thought this story was very interesting. I have come across several studies over the years that indicate grocery carts to be one of the most likely places for bacteria to settle. Because of the frequent touching by consumers shopping for their grocery needs, many people pick up unwanted germs from carts.
Nowadays, many stores are trying to combat the issue by offering sanitized cloths for consumers to use to wipe down the handles on their carts. Some stores like Winn Dixie are even going a step further and having their carts disinfected and sanitized by an outside company.
Watch this video and be aware that you may be picking up or spreading germs at the grocery stove by using your grocery cart.