"These patients tend to be elderly, they are commonly on ventilators and they often stay at the facility for an extended period of time," Dr. Dawn Terashita, medical epidemiologist and lead author of the study, said in a statement.
CRKP joins other superbugs such as methicillin-resistant Staphylococcus aureus, or MRSA, in a league of bacteria that outwits typical antibiotics.
"We develop new drugs to defeat the infections and germs change to get around those drugs and this is one of those cases," Dr. Richard Besser, ABC News chief health and medical editor, said today in an interview on ABC News' "Good Morning America."
Besser is a former acting director of the Centers for Disease Control and Prevention in Atlanta.
"It's like an arms race and in many ways the germs are winning," he said.
Read on at ABC