I know exactly one person out of my friends that is going to one World Cup game, and he’s well known as the guy who likes soccer.
My wife has enjoyed the TikToks of Europeans coming to Kansas City and reacting to stuff that’s totally normal to us, like the Bass Pro Shop and Tornado Shelter signs.
Utahns travel to US states with World Cup games for reasons other than the World Cup. Its Summer in the Northern Hemisphere. Utahns do travel, for example, to the San Francisco Bay Area for graduation ceremonies, to visit family, and for sightseeing. These Utahns may mingle with foreign visitors.
I’m not making a case that transmission of measles from a Utahn to a foreign visitor is likely, but the failure to consider possible routes of transmission is exactly why vaccination is so important.
Soccer rates as either the fourth or fifth largest sports in the USA depending on how you count it.
It was enough of a concern before the most contagious virus resurfaced (measles) that researchers have been looking at sporting events as mass vector events for years.
"The Federal Emergency Management Agency (FEMA) via DHS provided $625 million in grant funding to the 11 U.S. cities in hosting states to enhance security and preparedness efforts for the “safe execution” of tournament events"
https://www.cambridge.org/core/journals/antimicrobial-stewar...