There are three easy steps to prevent the flu this season they include:
1. The single best way to prevent seasonal flu is to get vaccinated each year, but good health habits like covering your cough and washing your hands often can help stop the spread of germs and prevent respiratory illnesses like the flu.
2. Avoid close contact with people who are sick. When you are sick, keep your distance from others to protect them from getting sick too.
3. If possible, stay home from work, school, and errands when you are sick. You will help prevent others from catching your illness. Cover your mouth and nose with a tissue when coughing or sneezing. It may prevent those around you from getting sick.
Source:
http://www.cdc.gov/flu/protect/habits.htm