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The u.s. centers for Disease Control and Prevention recently launched the One and Only Campaign, an endeavor aimed not—as the name might suggest—at promoting marital monogamy, but rather at reducing the improper reuse of certain medical devices. By its estimate, well over 100,000 Americans in the last decade have been exposed to infections such as hepatitis and HIV because of unsafe injections, such as reused needles or vials of medicine that have been dipped into more than once. These exposures have resulted in dozens of increasingly well-publicized outbreaks, such as the 21 cases of hepatitis C spread from one dialysis center in New Jersey. Indeed, the CDC now has a website to keep the public informed of the latest trouble.