An outbreak of norovirus linked to B.C.-harvested oysters is now under federal investigation.
The Public Health Agency of Canada (PHAC) says it has taken on a leadership role in the investigation, now that cases have been reported in Alberta and Ontario, as well as B.C.
As of Feb. 14, the agency says it's aware of 221 reported cases of norovirus connected to B.C. oysters.
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