The Kamloops Daily News reports Interior Health officials are investigating the cause of an E. coli outbreak at South Kamloops secondary that sickened four students and one employee.

Medical health officer Dr. Rob Parker said,

“As far as I know, they’re all recovering. One student was briefly hospitalized but is on the mend now.”

The local cases occurred between April 25 and 29. Parker said it can take three or four days to get sick after exposure, and people often take a few days before seeing a doctor. Getting samples to the lab can tack a few more days onto that.

Parents were notified about the outbreak in a newsletter that went out Wednesday.