Prevention:

• Wash your hands frequently, especially after blowing your nose, going to the bathroom, diapering, and before eating or preparing foods.
• Don't smoke. Tobacco damages your lung's ability to ward off infection.
• Wear a mask when cleaning dusty or moldy areas.

Vaccines can help prevent pneumonia in children, the elderly, and people with diabetes, asthma, emphysema, HIV, cancer, or other chronic conditions:

• Pneumococcal vaccine (Pneumovax, Prevnar) prevents Streptococcus pneumoniae.
• Flu vaccine prevents pneumonia and other problems caused by the influenza virus. It must be given yearly to protect against new viral strains.
• Hib vaccine prevents pneumonia in children from Haemophilus influenzae type b.

Taking deep breaths may help prevent pneumonia if you are in the hospital -- for example, while recovering from surgery. Often, a breathing device will be given to you to assist in deep breathing.

If you have cancer or HIV, you should talk to your doctor about additional ways to prevent pneumonia.