Digitally-colorized scanning electron microscopic image of Enterococcus faecalis. Pete Wardell / CDC
A breakthrough in antibiotic resistance was reported last week. Scientists had re-engineered the drug vancomycin—used against extremely resistant infections including MRSA—to make it stronger and stop bugs becoming immune to it. Vancomycin has been prescribed for 60 years and is a highly effective antibiotic—yet in some countries bacteria are developing resistance.