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Sampling wastewater near hospitals and care facilities can detect a deadly, drug-resistant fungus up to five months before patients show symptoms, according to new ÐÔÊӽ紫ý research.

ÐÔÊӽ紫ý professor Edwin Oh joined ARC Reno on Wednesday to discuss new research showing hospital wastewater monitoring may help detect dangerous drug-resistant C. auris outbreaks months before patients show symptoms. The study involved researchers and public health partners across Nevada, including the Nevada State Public Health Laboratory in Reno. Researchers say the technology could help hospitals identify outbreaks earlier and improve response times.

A deadly fungus called C. auris can be detected in sewer water from hospitals and nursing homes five months before it shows up in clinical tests of patients, according to a new study. 

Sampling sewage lines directly serving healthcare facilities allows scientists to identify drug-resistant fungus strains of candida auris (C. auris) five months before patient symptoms emerge.

Candida auris presents ongoing challenges for Nevada’s healthcare facilities. In 2025, the Silver State on its own accounted for 22% of the nation’s nearly 7,200 C. auris cases — reporting 1,605 infections to the Centers for Disease Control and Prevention, and outpacing California’s roughly 1,550 cases and Texas’ 830. When adjusted for population, Nevada logged 20 times more cases per capita than its coastal neighbor.

A new ÐÔÊӽ紫ý-led study found that testing wastewater from hospital sewer lines can detect drug-resistant strains of C. auris months before patients begin showing symptoms, offering health officials an earlier warning of potentially deadly outbreaks.

Every hospital has drains. Sinks, toilets, floor gullies in procedure rooms, the slow trickle from IV lines flushed between patients. For years, all of that went down the pipes and nobody thought much about it. But researchers at the ÐÔÊӽ紫ý have spent the better part of four years paying very close attention to what hospitals are washing away, and what they’ve found in Southern Nevada’s sewer lines is, by any measure, alarming: a drug-resistant killer fungus circulating through healthcare facilities months before a single patient tests positive.

ÐÔÊӽ紫ý-led research team uses wastewater surveillance to suss out C. auris strains with greater precision, paving way for potential new therapeutic development