The National Park Service is investigating a mysterious illness after multiple Grand Canyon rafters reported severe symptoms after separate river trips.
https://www.foxnews.com/travel/grand-canyon-mystery-illness-reportedly-triggers-nps-investigation-rafters-report-alarming-symptoms
https://www.foxnews.com/travel/grand-canyon-mystery-illness-reportedly-triggers-nps-investigation-rafters-report-alarming-symptoms