According to the WHO, you can decrease your chance of contracting the flu virus by taking the following steps:

	Get yourself (or family members age 6 months and older) vaccinated against current strains of influenza, if possible
	Keep your distance from people who show symptoms of influenza-like illness, such as coughing and sneezing (trying to maintain a distance of about 1 metre if possible)
	Clean your hands thoroughly with soap and water, or cleanse them with an alcohol-based hand rub on a regular basis (especially if touching surfaces that are potentially contaminated)
	Avoid touching your mouth, nose and eyes as much as possible
	Reduce the time spent in crowded settings if possible
	Improve airflow in your living space by opening windows
	Practice good health habits (including adequate sleep, eating nutritious food, and keeping physically active

The CDC lists these as important ways to lower the risk of transmission:

	Cover the nose and mouth with a tissue when coughing or sneezing. Throw tissues in the trash after use
	Wash hands often with soap and water, especially after coughing or sneezing. Alcohol-based hand cleaners are also effective
	Avoid touching the eyes, nose, or mouth. Germs spread this way
	Try to avoid close contact with sick people
	Those sick with flu-like illness are recommended to stay home for at least 24 hours after their fever is gone, except to get medical care or for other necessities. (The fever should be gone without the use of a fever-reducing medicine.) The sickened are advised to keep away from others as much as possible to avoid making others sick