the bla(oxa-48)-type genes are not susceptible to β - lactamase inhibitors . health officials have called cre among the country 's most urgent public health threats . among cre , strains that carry plasmid - encoded carbapenemase enzymes that inactivate carbapenem antibiotics and cause health concern because of their potential for rapid global dissemination , as evidenced by the increasing distribution of cre that produce the klebsiella pneumoniae carbapenemase and the new delhi metallo - β - lactamase . health experts are keeping a close eye on a type of antibiotic - resistant bacteria called cre . unlike more common types notes from the field : carbapenem - resistant enterobacteriaceae producing oxa-48 - like carbapenemases — united states , 2010–2015 please note : an erratum has been published for this article . a particularly dangerous type of cre bacteria is on the rise in the u.s. ( courtesy of cdc ) this post has been updated . a particularly dangerous superbug , dubbed the " phantom menace " by scientists , is on the rise in the united states , according to a report thursday by the centers for disease control and prevention . the target of thursday 's report is relatively new .