The Utah County Department of Health (that’s in the U.S.) reports the Campylobacter outbreak that left more than 300 people in Saratoga Springs ill and triggered a boil order appears to be receding.

Joy Holbrook, a nurse epidemiologist with the department, said,

"We’re thinking that the outbreak is decreasing out there. It has been several days since we’ve had any new cases from Saratoga Springs."

Health department officials still are looking for the source of the contamination, which is responsible for 21 confirmed cases of Campylobacter and more than 300 probable cases. Holbrook said the small trace of organisms required to cause sickness and infection can be difficult to detect.