A certified nursing assistant wipes Neva Shinkle's face with chlorhexidine, an antimicrobial wash. Shinkle is a patient at Coventry Court Health Center, a nursing home in Anaheim, Calif., that is part of a multicenter research project aimed at stopping the spread of MRSA and CRE — two types of bacteria resistant to most antibiotics. (Heidi de Marco/KHN)
