Historical context: An analysis published in Archives of Internal Medicine (2003) estimated that non-influenza viral upper respiratory infections (“common colds”) cost the U.S. economy $39.5 billion per year, largely due to missed work and unnecessary medical care. At the time, researchers estimated ~500 million colds annually, with more than half of the economic burden coming from lost productivity. A significant portion of remaining costs was attributed to inappropriate doctor visits and antibiotic prescriptions, despite antibiotics being ineffective against viral infections.
Why this still matters: Although these figures are now outdated, more recent data continue to show that viral respiratory infections remain among the most common causes of missed work and inappropriate antibiotic use. The study remains relevant as an early demonstration of how misunderstanding viral illness drives unnecessary healthcare costs and antibiotic exposure.
