Allergy and asthma involve inflammation, and infections can make the allergic process worse. Viral upper respiratory infections aggravate nasal allergies. Sinusitis, often associated with a bacterial infection, increases nasal symptoms and worsens asthma. While antibiotics do not help viral infections, they can help bacterial sinusitis. Asthma symptoms may not be controlled, even with medications, until sinusitis is treated properly. Sinus infections should be treated aggressively and long enough with antibiotics (often 3-6 weeks) to prevent recurrence. 

Take an influenza shot every year and the pneumonia vaccine (Pneumovax®) at least once. 

Decrease your chances of getting an infection by not sharing foods, drinks, and dishes; avoid contact with individuals who have a viral infection such as a cold or flu. Scientific studies show viral infections are transmitted through coughing and sneezing, hand shaking, and by touching door knobs, telephones, and other objects used by an infected person. Hand washing significantly decreases your exposure. Avoid touching your eyes, nose, and face with unwashed hands.