Influenza (Flu) How do you know if you have the flu? Symptoms: abrupt onset of fever, muscle aches, sore throat, and a nonproductive cough. Pneumonia Pneumonia is a serious inflammation of the lungs in which the air sacs fill with pus and other liquid. Why Quit Smoking? You know you should quit smoking. But you just haven't gotten around to it yet. Here are some reasons to help you commit to quitting. COPD: End-of-Life Care What kind of care would you want if you were no longer able to speak for yourself?