Bacteria with worrisome superbug genes found in U.S.
While patient treated successfully, researchers say bacterium has the potential to become powerful superbug
Researchers said the strain of bacteria was found in a 76-year-old man who was treated in 2014 for a complicated urinary tract infection. Further analysis in 2016 showed the bacterium carried mcr-1, a gene that creates resistance to the last-ditch antibiotic colistin. It was also shown to carry blaNDM-5, a gene that blocks effectiveness of carbapenems, which are considered medicine's most reliable current antibiotics now that bacteria have found ways of outwitting other families of antibiotics.
Although the patient was treated successfully with other antibiotics, researchers said the bacterium had the potential to spread and become a powerful superbug.