March 11, 2017

Deadly fungal infection emerged in US

A strain of Candida auris cultured in a petri dish at CDC. ( Shawn Lockhart, CDC) 


Nearly three dozen people in the United States have been diagnosed with a deadly and highly drug-resistant fungal infection since federal health officials first warned U.S. clinicians last June to be on the lookout for the emerging pathogen that has been spreading around the world.

The fungus, a strain of a kind of yeast known as Candida auris, has been reported in a dozen countries on five continents starting in 2009, when it was found in an ear infection in a patient in Japan. Since then, the fungus has been reported in Colombia, India, Israel, Kenya, Kuwait, Pakistan, South Korea, Venezuela and the United Kingdom. 


Unlike garden variety yeast infections, this one causes serious bloodstream infections, spreads easily from person to person in health-care settings, and survives for months on skin and for weeks on bed rails, chairs and other hospital equipment. Some strains are resistant to all three major classes of antifungal drugs. Based on information from a limited number of patients, up to 60 percent of people with these infection have died. Many of them also had other serious underlying illnesses.

Those at greatest risk are individuals who have been in intensive care for a long time or who are on ventilators or have central line catheters inserted into a large vein.

In the United States, the largest number of infections has been reported in New York, with at least 28 cases, according to the Centers for Disease Control and Prevention. Infections have also been reported in Illinois, Maryland, Massachusetts and New Jersey. Last June, the CDC sent an urgent alert to clinicians to start looking for the infections, which are difficult to identify with standard laboratory methods.

“As soon as we put out that alert, we started to get information about cases and now we know more about how it spreads and how it’s acting,” Tom Chiller, the CDC’s top fungal expert, said in an interview Thursday. The CDC now tracks the number of infections, updating the case count every few weeks.

In addition to the 35 infected patients, an additional 18 were carrying the organism but weren't sickened by it.

The microbe is among a group of newly emerging drug-resistant threats, health officials said.
“These pathogens are increasing, they’re new, they’re scary and they’re very difficult to combat,” said Anne Schuchat, CDC’s acting director, during a briefing in Washington this week about the growing danger from antimicrobial resistance. Read more here

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