As the 2026 Soccer World Cup approaches, US health authorities are rolling out an expanded surveillance strategy that will use wastewater analysis and social media monitoring to identify potential disease outbreaks in real time.
The approach forms part of a wider public health operation centred in Washington, where epidemiologists will track environmental and digital signals to detect infectious illnesses as millions of fans travel across host cities in the United States, Mexico and Canada.
The tournament, which kicks off in Mexico on Thursday before moving into the US and Canada the following day, is expected to draw more than 6.5 million visitors from over 100 countries for 78 matches.
Rather than relying solely on traditional reporting systems, officials say they will analyse sewage samples to identify traces of pathogens and scan online conversations for early indicators of unusual illness patterns among fans and local communities.
The aim, according to public health experts, is to create an early-warning system capable of flagging outbreaks before they spread widely through packed stadiums and busy host cities.
Rebecca Katz, an epidemiologist at Georgetown University, said cross-border coordination remains essential, even as the US navigates a more complex international reporting environment.
She explained that the US withdrawal from the World Health Organization has changed how information is shared globally, but alternative partnerships are being used to maintain surveillance links.
“We, though, are coordinating directly with the Pan American Health Organization. So, we’ll be able to receive information from them, which will pull in that data from Mexico and Canada and then be able to share directly with local and state partners,” Katz said.
Officials say the combined use of wastewater intelligence and digital monitoring represents a shift toward faster, data-driven public health responses during major international events where disease spread risks are elevated.