Experts Update Best Practices for Treating the 1 in 8 U.S. Adults Suffering from Sinusitis Highlights: Sinusitis affects about 1 in 8 adults in the United States, resulting in over 30 million annual diagnoses. The direct cost of managing acute and chronic sinusitis exceeds $11 billion per year. More than 1 in 5 antibiotics prescribed in adults are for sinusitis, […]