CDC Says 'Superbug' Infection Spread from Patient to Patient in D.C., Dallas Outbreaks

The Centers for Disease Control and Prevention reported the outbreak of a "superbug" infection in Washington, D.C. and the Dallas area that spread from patient to patient and is resistant to the three major classes of medications, the Associated Press reported.

The CDC reported the outbreaks occurred in a D.C. nursing home and two hospitals in the Dallas area. A handful of the patients at these facilities were taken over by an invasive fungal infection they weren't able to treat.

The CDC's Dr. Meghan Lyman said, "This is really the first time we've started seeing clustering of resistance" in which patients seemed to be getting the infections from each other.

For more reporting from the Associated Press, see below.

CDC Reports 'Superbug' Outbreaks
The CDC reported outbreaks in the Washington D.C. and Dallas areas of a drug-resistant "superbug" that is being spread from patient to patient. A general view of the Centers for Disease Control headquarters in Atlanta on April 23, 2020. Tami Chappell/Getty Images

The fungus, Candida auris, is a harmful form of yeast that is considered dangerous to hospital and nursing home patients with serious medical problems. It is most deadly when it enters the bloodstream, heart or brain. Outbreaks in health care facilities have been spurred when the fungus spread through patient contact or on contaminated surfaces.

Health officials have sounded alarms for years about the superbug after seeing infections in which commonly used drugs had little effect. In 2019, doctors diagnosed three cases in New York that were also resistant to a class of drugs, called echinocandins, that were considered a last line of defense.

In those cases, there was no evidence the infections had spread from patient to patient — scientists concluded the resistance to the drugs formed during treatment.

The new cases did spread, the CDC concluded.

In Washington, D.C., a cluster of 101 C. auris cases at a nursing home dedicated to very sick patients included three that were resistant to all three kinds of antifungal medications. A cluster of 22 in two Dallas-area hospitals included two with that level of resistance. The facilities weren't identified.

Those cases were seen from January to April. Of the five people who were fully resistant to treatment, three died — both Texas patients and one in Washington.

Lyman said both are ongoing outbreaks and that additional infections have been identified since April. But those added numbers were not reported.

Investigators reviewed medical records and found no evidence of previous antifungal use among the patients in those clusters. Health officials say that means they spread from person to person.

CDC Reports 'Superbug' Outbreaks
This 2016 photo made available by the Centers for Disease Control and Prevention shows a strain of Candida auris cultured in a petri dish at a CDC laboratory. On Thursday, July 22, 2021, the CDC said they now have evidence of the untreatable fungus spreading in a Washington, D.C, nursing home and at two Dallas-area hospitals. Shawn Lockhart/CDC/Associated Press