By Dr. Mercola
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Each year Americans catch more than one billion colds, making the cold virus the most common infectious disease in the United States.
It accounts for more school absences and missed work than any other illness, and it's the number one reason people visit their physicians -- even though most physicians have little to offer in the form of treatment.
It's a widespread misconception that colds are caused by bacteria. Colds are actually triggered by a virus, which means if your physician prescribes you an antibiotic, it will be absolutely useless.
More on this shortly, but before I delve into simple prevention and treatment strategies it's important you know how colds are contracted in the first place.