http://www.cdc.gov/drugresistance/community//know-and-do.htm
Centers for Disease Control and Prevention, U.S. Department of Health and Human Services
Are you aware that colds, flu, and most sore throats and bronchitis are caused by viruses? Did you know that antibiotics do not help fight viruses? It’s true. Plus, taking antibiotics when you have a virus may do more harm than good. Taking antibiotics when they are not needed increases your risk of getting an infection later that resists antibiotic treatment.