A drug-resistant fungus that health officials have labeled an urgent antimicrobial-resistance threat has now been detected in 23 US states in 2026. According to the latest CDC surveillance data, more than 3,100 clinical cases have been confirmed so far this year — numbers that are consistent with the pace seen at the same point last year, though officials note the overall trend has continued climbing since it was first identified in the country.
The fungus behind the alarm is called Candida auris, or C. auris for short.
What Exactly Is Candida Auris?
C. auris is a type of yeast that was first identified in a patient in Japan back in 2009. Unlike common yeast infections most people are familiar with, this strain behaves more aggressively — it can spread from person to person and survive on hard surfaces for weeks at a time, including bed rails, medical equipment, and countertops. Standard lab tests often struggle to correctly identify it, which can delay isolation and treatment.
Most concerning is its resistance to antifungal medication. Some strains resist multiple classes of antifungal drugs simultaneously, leaving doctors with very few treatment options once an infection takes hold.
Which States Are Most Affected
Texas currently leads the country with the highest number of confirmed cases, followed by Michigan and Illinois. Health authorities stress that the fungus has now been reported in every major US region, though case concentration remains heavily tied to healthcare settings rather than the general community.
Who Is Actually at Risk
Here's the reassuring part: healthy people going about normal daily life — at school, at home, or at work — face very little risk from this fungus. The overwhelming majority of infections occur among patients in hospitals or long-term care facilities, people using invasive medical devices such as ventilators, catheters, or feeding tubes, individuals with severely weakened immune systems, and older adults, who account for the vast majority of clinical cases.
Why Health Officials Are Watching Closely
The concern isn't a citywide outbreak in the way a virus might spread — it's the fungus's ability to quietly persist in hospital environments and resist nearly every drug thrown at it. That combination makes it a slow-burning but serious challenge for infection-control teams nationwide, and it's why the CDC continues to track and publish state-by-state data.
Bottom Line
If you or a loved one are not currently hospitalized or in long-term medical care, your personal risk from this outbreak remains low. The bigger story here is a public-health one — a reminder of how quickly drug-resistant organisms can establish themselves once they gain a foothold in healthcare systems, and why infection-control protocols in hospitals matter more than ever.