The Centers for Disease Control and Prevention says that 53 percent of adults have not kept up-to-date with their vaccinations against tetanus and diphtheria, two diseases that are potentially fatal in any age group. A new public awareness campaign titled "The Power of 10" has therefore been created by the National Foundation for Infectious Diseases (NFID) to underscore the benefits of receiving a booster shot for tetanus and diphtheria every 10 years, and to remind the public that they need that booster to keep up their immunity. "Probably the biggest obstacle to people getting their diphtheria and tetanus booster is they don't know they are supposed to get it," remarks Dr. Susan Rehm, president of the NFID and a staff physician at the Cleveland Clinic. She notes that tetanus can be contracted after what appears to be a trivial injury, such as a splinter.