Connor Perruccello-McClellan, a senior at Providence Country Day School in Rhode Island, has been vaccinated against HPV, something less than 1 percent of U.S. males can say. Richard Knox/NPR hide caption

itoggle caption Richard Knox/NPR

Dolphin bite? There's a medical code for that. Simone Di Tonno - Annachiara Fig/iStockphoto.com hide caption

itoggle caption Simone Di Tonno - Annachiara Fig/iStockphoto.com

Dr. Dan Shuman (right), who was recruited to the Ashland Health Clinic as part of its mission-focused medicine program, consults with a patient about smoking cessation. Peggy Lowe/Harvest Public Media hide caption

itoggle caption Peggy Lowe/Harvest Public Media

If there's a test for it, chances are a storefront lab is eager to help you have it done. iStockphoto.com hide caption

itoggle caption iStockphoto.com