What Causes a Cold Sore? Factors can include injury or stress.
Identifying Symptoms of Bronchitis. Continue.
Breathe Easier in a Volcano Zone. Continue.
Using Decongestants. They aren't safe for everyone.
Getting Rid of a Runny Nose. Continue.
CDC Urges Faster Testing for Bird Flu Amid Growing Outbreak
Blood Test May Help Predict How Long Immunity Lasts
First U.S. Death From Bird Flu Reported in Louisiana
Cruise Passenger Dies Amid Norovirus Outbreak That Sickened Dozens
Norovirus Cases Are Up in Pockets of the U.S.
CDC Reports Potentially Troublesome Mutations in Bird Flu Found in Louisiana Patient
