(MIAMI.CBSLOCAL) — An antibiotic-resistant family of bacteria continues to spread throughout the U.S. health care system and is now prompting warnings from the Centers for Disease Control and Prevention.

The bacteria, Carbapenem-Resistant Enterobacteriaceae (CRE), kill up to half of the patients who get the bloodstream infections from the disease. The disease has evolved a resistance to carbapenems, also called last-resort antibiotics.

In addition, the CRE bacteria can reportedly transfer its resistance to other bacteria within its family. The transfer of resistance can create additional life-threatening infections for patients in hospitals, longer-term health care facilities, and possibly otherwise healthy people, according to the CDC.

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