Evolved bacteria in recalled eyedrops cause concern.

A deadly bacteria linked to recalled eyedrops has evolved in an alarming way, becoming resistant to nearly all available treatments. The new strain of Pseudomonas aeruginosa has infected dozens of people and killed three in the US. More than half of the cases have been found in long-term health care facilities, and nearly all are linked to contaminated eyedrops that had been imported from India. The CDC investigation revealed that the infections linked to the eyedrops may be treated by only one known antibiotic, called cefiderocol. The mutated strain of Pseudomonas underscores the growing risk of antibiotic resistance.