The investigators are on alert to the possible spread of colistin-resistant gene, MCR-1, which they detected in humans in the United States for the second time in June 2016.
For the second time, a bacterial pathogen, which carries the colistin resistance gene, mcr-1, has been identified in the United States.
A superbug is found in an American woman. It raises fear that it might be the end of the road for antibiotics.