Sinus infection sufferers may see a change during their doctors’ appointments this cold and allergy season as new national guidelines urge doctors to do less prescribing and more educating. As many as 45 million people in the U.S. suffer from chronic sinus infections each year. After decades of overprescribing antibiotics, at a cost of billions of dollars, physicians are being asked to reconsider their treatment approach. According to the Infectious Diseases Society of America, the reasoning is simple. Up to 90 percent of all sinus infections are caused by a virus, which antibiotics can’t treat and can actually make worse by killing healthy bacteria and strengthening the immunity of dangerous bacteria found in the sinus cavity. Dr. Subinoy Das was interviewed.