Public health specialists have launched a dedicated surveillance operation to detect infectious disease threats early during the 2026 World Cup by analyzing wastewater samples and monitoring online chatter.
The 39-day tournament begins on Thursday in Mexico. Organizers estimate more than 6.5 million soccer fans from more than 100 countries will attend 104 matches spread across venues throughout the United States, Canada, and Mexico. The global travel of a worldwide audience to packed stadiums across North America creates conditions for the rapid transmission of pathogens, according to health security experts. The United States will host 78 of the 104 matches.
