what are some of the best treatment to prevent this?

Antibiotics. And lots of them.

http://www.doctorslounge.com/ask.htm

Don't smoke

Washing your hands for a full minute in warm soapy water at least six extra times a day.

Make a serious effort not to touch your mouth, eyes, or nose until after you have washed your hands.

Reduce things that trigger allergy responses in your system. Cover matresses, pillows, and wash blankets and hoodies often.

Drink more water.

Stop smoking. Or being around smokers.

Eat at least one more piece of fruit a day.

Walk briskly at least 30 minutes twice a day.

Get a full 8 hours of sleep a night.

Do all your breathing treatments and take your medications.