Jassey, DOCoughing up thick, green mucus may mean a bacterial or, less often, viral infection, but that's not always true.

Common implies that there’s a single ordinary pathogen to blame for your runny nose, coughing, and mild fatigue. Actually, there’s a huge array of viruses—­more than 200 of them—that induce colds, ...

Joanne Collevy was always "supremely" fit and healthy. She had a personal trainer, lifted weights, and walked five kilometres ...