A killer super fungus is tearing through American hospitals, and the experts sounding the alarm already picked their villain.
Their favorite magazine pinned the blame on a warming planet.
And the CDC’s own researchers already put one awkward answer in writing.
A Hospital Bug Doctors Can’t Kill Keeps Finding New Victims
The bug goes by the name Candida auris, a yeast doctors first pulled out of a patient’s ear in Japan back in 2009.
It doesn’t behave like the yeast most folks know. C. auris grows comfortably at 107 degrees, clings to skin and bedrails like barnacles on a boat hull, and shrugs off the disinfectants hospital cleaning crews rely on. Most of the drugs doctors throw at it don’t faze it much either.
The CDC released its 2026 Antimicrobial Resistance Threats Report in late October and slotted C. auris into the top tier, one of four germs the agency says require “urgent and aggressive action.” Clinical cases nationwide reached 4,523 in 2023, nearly ten times the 2019 count. And 96% of the samples the agency tested in 2023 resisted fluconazole, one of the most common antifungal pills on the market.
The CDC said the fungus had infected more than 3,000 people across 27 states by the summer of 2026. Up to 60% of infected patients die, although the agency has long noted that many of them already carried other life-threatening illnesses.
Dr Luis Ostrosky-Zeichner, an infectious-disease specialist at UTHealth Houston, has watched the curve bend in real time. “Ten years ago, we’d maybe see one Candida auris patient every few months,” he said. “Now, we have several cases per day in Houston.”
But the frail nursing home patient isn’t the only target anymore.
Dr Andrej Spec of Washington University School of Medicine in St Louis treated an otherwise healthy woman whose stubborn vaginal yeast infection turned out to be C. auris. A routine pill clears it up for most women. She needed IV antifungals.
Ryan Zwick was a healthy 22-year-old fresh out of nursing school when COVID put him in intensive care in December 2023. Doctors hooked him to a heart-lung machine through tubes in his chest, and they believe the fungus slipped in through that opening. More than two years later, he still takes weekly infusions and expects to need them for life. “I just hope these drugs keep working for me,” Zwick said.
And C. auris has company. The CDC reported in October that cases of one brain-attacking mold quadrupled in two years, and Spec said the abscesses it causes kill up to 70% of patients. “This is a nasty pathogen,” he said.
Blame the Weather and Skip the ICU
The TIME package that kicked off this round of headlines leaned hard on one suspect: climate change.
“A lot of us are leaning toward the idea that this is probably being driven by climate change,” Spec said. Dr Peter Pappas of the University of Alabama at Birmingham went further. “It’s hard to explain the emergence of Candida auris simultaneously on all these continents and not include climate change as part of it. It just has to be. There’s no other good explanation,” Pappas said.
And read those quotes again. Leaning toward. Probably. It just has to be. That’s a hunch in a lab coat.
Now, the hunch isn’t crazy. Dr Arturo Casadevall of Johns Hopkins has trained fungi in the lab to handle more heat by nudging the incubator up a little at a time, and his team found sidewalk fungi in a hot Baltimore neighborhood growing at higher temperatures than the same species in a shady part of town two miles away. Scientists can chew on that one for years.
But the causes with actual paperwork behind them got a lot less airtime.
The magazine admits, almost as an aside, that overuse of antifungal chemicals in medicine, farming, and livestock has taught these fungi to beat the drugs. Researchers at the University of Georgia collected 700 samples of the mold Aspergillus fumigatus from farms in Georgia and Florida, and nearly one in five resisted tebuconazole, a common crop fungicide. The resistant farm strains carried the same resistance patterns doctors found in patients.
Not every lab agrees. A German team that tested crop fields before and after spraying reported no evidence that farm azoles significantly drove resistance in that setting. And other researchers who traced C. auris’ family tree have floated the possibility that its jump into drug resistance tracks with heavy azole use in agriculture.
Then there’s the pandemic, the chapter nobody at the public-health podium wants to reread.
In March 2023, CDC researchers wrote in the Annals of Internal Medicine that US cases climbed from 476 in 2019 to 756 in 2020 and 1,471 in 2021, and that COVID likely drove part of that jump. Hospitals yanked the staffers who normally fight germs like this one and sent them to COVID wards. Echinocandin-resistant cases, the kind that defeat the first-line treatment, tripled in 2021.
When the CDC and Florida health officials dug into a July 2020 outbreak at a Florida hospital’s COVID unit, they found workers stacking multiple layers of gowns and gloves, a practice the CDC itself does not recommend and one that likely helped carry the fungus from patient to patient. California officials reached a similar conclusion about the surge that ripped through their facilities from May 2020 to May 2021, pinning it on COVID-era practices and conditions.
So a big slice of this explosion grew out of the panic-driven hospital culture of the COVID years. The same public-health establishment that set the tone for those years now wants Americans staring at the thermostat.
The Doctors Already Know Who Built This Mess
Dr Tom Chiller took a frantic call from British health officials in 2015, when C. auris started tearing through a big London hospital. He spent two decades as deputy and then chief of the CDC’s fungal-diseases branch, and he remembers how strange that first warning sounded. “Suddenly we have a yeast acting like a bacteria? It was weird,” he said.
It didn’t stay weird for long. “It was a wake-up call,” Chiller said. “We realized that, huh, maybe this little ear fungus isn’t just a little ear fungus anymore.”
The Make America Healthy Again movement has spent years warning about the exact forces the doctors in that magazine describe: a medical system that reaches for another prescription first, and a farm system drenched in chemicals.
“We are creating an environment that is favoring pathogenic fungi and drug resistance,” Spec said. Experts tie a new, highly contagious ringworm strain that can resist every antifungal drug to overuse of over-the-counter antifungal medications. “Think of athlete’s foot, but it’s now athlete’s body, and it’s untreatable,” Chiller said.
At least 7 million Americans now live with weakened immune systems, many of them because of drugs that tamp down the body’s defenses to fight cancer and autoimmune disease. Nobody should stop treating cancer. But a country that keeps stacking prescriptions on top of prescriptions shouldn’t act surprised when the bugs find the gaps.
Chiller doesn’t think this stays in the hospital. He compares C. auris to MRSA. “MRSA used to be hospital-only, and now it’s on every skin boil on the high school wrestling team,” he said.
Down in Brazil, a fungus that cats spread through scratches and bites now infects thousands of people a year, and it keeps marching across South America, with Uruguay logging its first outbreak in 2025 and Peru its first case in 2026. “It’s just a matter of time before it ends up in the United States,” CDC scientist Dallas Smith said.
Casadevall, the Johns Hopkins researcher who first published the climate theory, let the other half of the story slip out himself.
“We’re making all this medical progress,” Casadevall said, “but that progress comes at a cost.”
Sources: TIME, “Why Dangerous Fungi Are on the Rise” (October 27, 2026); Becker’s Hospital Review, “19 drug-resistant pathogens threatening US health: CDC”; WINK News, “Drug-resistant bacteria killing 50,000 Americans a year, CDC warns”; Healio, “Millions at risk for drug-resistant infections, CDC says”; CIDRAP, “CDC reports dramatic increase in US Candida auris cases”; Associated Press, “Superbug fungus cases rose dramatically during pandemic” (March 2023); Open Forum Infectious Diseases, “The Resurgence of Candida auris in California during the COVID-19 Pandemic”; AFP via The Guardian (Nigeria), “Killer fungus spread rampantly at US hospital Covid ward”; CMM Online, “Increase in Drug-Resistant Superbug Linked to Pandemic”; University of Georgia CAES News, “Agricultural fungicides may be driving medication resistance”; bioRxiv, “Effects of agricultural fungicide use on Aspergillus fumigatus”; Frontiers in Microbiology, “From crops to clinic.”
