In addition to getting the flu vaccine, prevent the spread of illness by following these steps: 

• Cough or sneeze into your elbow or a tissue and properly dispose of used tissues
• Avoid touching your eyes, nose or mouth
• Wash your hands often with soap and water, especially after a cough or sneeze. Alcohol-based hand sanitizers may be used if soap and water are not available
• Avoid close contact with sick people
• Stay home when you are sick to avoid spreading illness to others
• Contact your medical provider for treatment options

Links:

San Bernardino Public Health:  Emerging Infectious Diseases | Department of Public Health
California Department of Public Health: Influenza (Flu)
Center for Disease Control and Prevention CDC:  H1N1 Information
Center for Disease Control and Prevention CDC:  National Flu Information