Depends on what you are touching. There is a higher risk if you are touching organic substances where the microorganisms can live. Including soil, plants, animals, other people, food, feces etc. Inorganic substance are less likely to contain microorganisms, maybe in crowded public places where the transition time is shorter. If you are not touching anything you'll be fine. Also if you don't like using water you can occasionally use alcohol too or any other antiseptic.
Cleanliness is close to godliness. Washing especially hands with Soap and water is a preventive action. Ps: Most folks donut know this in order to make sure your hands are Thoroughly clean as you wash sing the lyrics of Happy Birthday one at the end of the song your hands will be cleaned. If you are in a restaurant restroom hum it. Mister Bruce (educator 2-12-14)
You could. Many nasty germs do get passed along on our hands when we eat or rub our eyes with unwashed hands. Our hands touch hundreds of things every day that have been touched by hundreds of others. Money and shopping cart handles are some of the worst. We pick up bad bacteria all the time. If you have a good immune system then most of the germs dont do anything but occasionally one gets thru our defences and you can get flu or diarhea, etc.
I find it terribly ironic that you have the word 'hospital' as part of your username. ANYWAYS Have you ever eaten in a restaurant where none of the cooks wash their hands and they made your salad or sushi right after taking out the garbage or going to the restroom? Think that over, and if you can't figure that out, look up 'cross-contamination' on wikipedia.