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Risks and Symptoms

Is It a Cold or Sinus Infection? How to Tell the Difference

Each year, about 31 million people experience sinus infections
At least once a year, Anna Lord, a 32-year-old from Seattle, has "almost unbearable pain" behind her eyes, cheeks, and forehead. Sometimes she has sinus drainage, and occasionally the discomfort arrives with a low-grade fever.  Read More


10 Ways You May Put Yourself at Risk for Flu

If you already sneeze into your sleeve, wash your hands diligently, and avoid crowds where these viruses can easily spread, you're on the right track to outsmarting the swine flu.   View slideshow


What’s That Cough?

You’re hacking up a storm. Do you need to see a doc for your cough? It may not be pretty, but a glance at what’s coming up (called "sputum") can help you decide.   View slideshow


13 Sneaky Causes of Sinus Trouble

Sinus infections, the cause of untold misery, strike about 37 million people in the U.S. each year. Here are 13 things that can cause an acute sinus infection (the most common type) and, in some cases, lead to a chronic sinus infection.   View slideshow


What Ails You: Cold, Flu, or Something Else?

How do you know if those sniffles are the cold, flu or allergies? Here's how to tell and get relief quick.   View slideshow


Pandemic Scares Throughout History

Although H1N1 influenza killed more than 4,000 people in the United States in 2009-2010, this outbreak was relatively mild compared to some flu pandemics. In this slideshow, we revisit the century's worst flu pandemics—and false alarms.   View slideshow