‘Needle in a haystack’: Experts say finding daycare E. coli outbreak source complex

‘Needle in a haystack’: Experts say finding daycare E. coli outbreak source complex.

Image of E. coli bacteria.

September 13, 2023

As of Tuesday, there have been 264 lab-confirmed cases of the bacterial infection since the outbreak at 11 Calgary daycares was declared Sept. 4. Twenty-five patients were in hospital, with 22 having hemolytic uremic syndrome, a complication affecting the blood and kidneys. Six patients were on dialysis at Alberta Children’s Hospital. 

Siyun Wang, associate professor of food safety engineering at the University of British Columbia, said E. coli outbreak investigations are like criminal investigations— it involves interviewing people, gathering evidence and waiting for lab test results.

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