The 2026 World Cup is here, and so are the germs. This virus is experts’ No. 1 concern

While millions of soccer fans cheer or groan over World Cup matches spanning North America, health officials will be on high alert for germs.A heat wave may be the most obvious health threat. But infectious diseases can spread in a crowd, and experts are set to scrutinize wastewater, hospital visits, even social media for any signs that an outbreak might be brewing.Measles, one of the most contagious diseases, is among the top concerns, sparking a warning this week from the Pan American Health O...