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
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
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 pandemicsand false alarms. View slideshow
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