<i>E. coli</i> Carrying mcr-1 and ndm-5 (IMAGE) University at Buffalo Caption Fewer than two dozen cases of E. coli carrying mcr-1 have been reported in the US, however, the bacteria's immunity to available antibiotics has left the medical community vulnerable to a massive outbreak of infections. Credit Photo: Douglas Levere, University at Buffalo Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.