Wash your hands a lot.
Don't Share Cups
Use tissues when you blow your nose, then throw them away.
Keep your hands away from your eyes, nose and mouth.
Use disposable paper towels in the kitchen, not cloth ones.
Wash your children's toys once a week.
Cover your mouth with a tissue or your hands when you sneeze.
Open your windows when the weather is decent. Consider buying a humidifier.
Frequently clean doorknobs, light switches, telephones and counter tops.
Don't let anyone smoke in your house.