Women rarely go anywhere without a purse, which means that if a woman enters a place full of germs, so does her bag. That could mean she ends up carrying around microbes that could make her sick all day long.
Microbiologist Chuck Gerba researches where organisms that make us sick lurk and lately he says he has found that germs gather on the outside of a woman's purse, especially on the bottom.
"We found fecal bacteria you normally find on the floor of restroom," he said. "We found bacteria that can cause skin infections on the bottom of purses. What's more amazing is the large numbers we find on the bottom of purses, which indicates that they can be picking up a lot of other germs like cold viruses or viruses that cause diarrhea."
Gerba demonstrated how much bacteria can grow in a woman's purse for ABC News, with results that ranged from scary to downright terrifying.
One woman was found with 1,000 bacteria per square inch. Health experts say that anything more than 200 bacteria per square inch is dangerous.
"I'm pretty careful where I set things down. I try to avoid lots of germs. I always wash my hands when I get home, so I'm pretty careful about keeping stuff clean," she said.
She said that she had just been to a food court in Washington, D.C., and rested her bag on the table.
Another woman bought her bag about a month ago and Gerba's measurements showed her purse also contained thousands of germs. ABC News is not naming the women who participated in order to protect their identities.
"I'll probably just get a new one," she said.
Yet another woman has been carrying a handbag around for years and Gerba said that he found "hundreds of thousands of germs on the surface."
Gerba found about half a million bacteria on the bottom of one woman's large bag.
Subways for Germs
Each time ABC News and Gerba ran an instant field test and later a lab test on swabs from the outside bottom of 10 women's purses, every single one had at least some bacteria, most had tens of thousands and a few were saturated with millions. One even had 6.7 million bacteria!
Half of the bags tested positive for coliform bacteria, which indicated the possible presence of human or animal waste.
Many women ABC News interviewed were not concerned.
"It doesn't bother me. I don't touch the bottom of my purse," the woman with the large bag said.
But Gerba said that women who carry around bags with them at all times should be concerned.
"It matters because you can move germs that can cause illness from one location to another," he said. "You can later touch that purse and get them on your hands, or you could put your purse near a food preparation area and transfer germs to areas you may touch during food preparation."
Some women argued that they do not lick the bottom of their purses, so they should not be in danger of getting sick, but it is very easy to unknowingly transfer germs. For example, whatever touched the bottom of your purse touches you when you grab it. If you eat a sandwich soon after that, the germs go right into your mouth.
"The purses are really becoming subways for micro organism," Gerba said. "They're being transferred from one location to another. So it's just like germ 'public transportation.' I'm afraid to touch them. You know, I know too much. I'll never become a purse snatcher, believe me."