The American swim team is facing significant challenges at the World Aquatics Championships, grappling with an outbreak of acute gastroenteritis. Many team members have reported symptoms, leading to several athletes being too ill to travel with the rest of the team to Singapore. Despite these setbacks, some swimmers like Katie Ledecky continue to compete, with Ledecky finishing third in the 400 freestyle event. The illness has raised concerns over performance, as team members recover from the stomach bug that has echoed through the squad, impacting their preparation and competition.