An illustration of Shigella bacteria. Stephanie Rossow/Science Source hide caption
drug-resistant bacteria
This scanning electron microscope image made available by the Centers for Disease Control and Prevention shows rod-shaped Pseudomonas aeruginosa bacteria. U.S. health officials are advising people to stop using the over-the-counter eye drops, EzriCare Artificial Tears, that have been linked to an outbreak of drug-resistant infections of Pseudomonas aeruginosa. Janice Haney Carr/AP hide caption
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 hide caption
The CDC is trying to stop E. coli and other bacteria that have become resistant to antibiotics because they can cause a deadly infection. Science Photo Library/Getty Images/Science Photo Libra hide caption