Avoid touching these surfaces in public places to stay healthy.

Restaurant menus
Cold and flu viruses can survive for 18 hours on hard surfaces. If it's a popular restaurant, hundreds of people could be handling the menus--and passing their germs on to you. Never let a menu touch your plate or silverware, and wash your hands after you place your order. YES I get the menu and use a disinfectant wipe on each one we are handed! OH the looks I get!

Lemon wedges
According to a 2007 study in the Journal of Environmental Health, nearly 70% of the lemon wedges perched on the rims of restaurant glasses contain disease-causing microbes. When the researchers ordered drinks at 21 different restaurants, they found 25 different microorganisms lingering on the 76 lemons that they secured, including E. coli and other fecal bacteria. Tell your server that you'd prefer your beverage sans fruit. Why risk it?

Condiment dispensers
It's the rare eatery that regularly bleaches its condiment containers. They just add ingredients to the container at the tables at or after closing or opening.   Many people don't wash their hands before eating, says Kelly Reynolds, PhD.  The person who poured the ketchup, used the salt and pepper before you may not have been, which means his germs are now on your fries. Squirt hand sanitizer on the outside of the condiment bottle or use a disinfectant wipe on condiment dispenser before you grab it. Holding the bottle with a napkin won't help; napkins are porous, so microorganisms can pass right through, Reynolds says.

Restroom door handles
Don't think you can escape the restroom without touching the door handle? Palm a spare paper towel after you wash up and use it to grasp the handle. Yes, other patrons may think you're a germ-phobe--but you'll never see them again, and you're the one who won't get sick. I carry a pocket packet of disinfectant wipes to ANY public restroom and I ONLY use them in emergencies!

Soap dispensers
About 25% of public restroom dispensers are contaminated with fecal bacteria. Soap that harbors bacteria may seem ironic, but that's exactly what a recent study found. "Most of these containers are never cleaned, so bacteria grow as the soap scum builds up," says Charles Gerba, PhD. "And the bottoms are touched by dirty hands, so there's a continuous culture feeding millions of bacteria."  Be sure to scrub hands thoroughly with plenty of hot water for 15 to 20 seconds--and if you happen to have an alcohol-based hand sanitizer, use that, too. OH and did I mention I use a disinfectant wipe after I wash my hands!

Grocery carts
The handles of almost two-thirds of the shopping carts tested in a 2007 study at the University of Arizona were contaminated with fecal bacteria. In fact, the bacterial counts of the carts exceeded those of the average public restroom. Swab the handle with a disinfectant wipe before grabbing hold (stores were starting to provide them, BUT MANY stopped during down economy). And while you're wheeling around the supermarket, skip the free food samples, which are nothing more than communal hand-to-germ-to-mouth zones.

Airplane bathrooms
When Gerba tested for microbes in the bathrooms of commercial jets, he found surfaces from faucets to doorknobs to be contaminated with E. coli. It's not surprising, then, that you're 100 times more likely to catch a cold when you're airborne, according to a recent study in the Journal of Environmental Health Research. To protect yourself, try taking green tea supplements. In a 2007 study from the University of Florida, people who took a 450-milligram green tea supplement twice a day for 3 months had one-third fewer days of cold symptoms. The supplement brand used in the study was Immune Guard ($30 for 60 pills; immune-guard.us). AS a retired Flight Attendant, I will say---I never got sick while flying. I drank green tea daily and while passengers slept etc. while in-flight!

Doctor's office
A doctor's office is not the place to be if you're trying to avoid germs. These tips can help limit your exposure.
 1. Take your own books & magazines (and kid's toys, if you have your children or grandchildren with you).
 2. Also pack your own tissues and hand sanitizers, which should be at least 60% alcohol content.
 3. In the waiting room, leave at least two chairs between you and the other patients to reduce your chances of picking up their bugs. Germ droplets from coughing and sneezing can travel about 3 feet before falling to the floor.