Canada’s first presumptive case of H5 avian influenza in an individual detected in B.C.

An individual in British Columbia has tested presumptive positive for avian influenza caused by the H5 influenza virus, the first detection of avian influenza due to the H5 virus in a person in B.C., according to a release from the B.C. provincial government.

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This is also the first detection of a presumed human case of H5 avian influenza acquired in Canada. The positive test for H5 was performed at the B.C. Centre for Disease Control’s Public-Health Laboratory. Samples are being sent to the National Microbiology Laboratory in Winnipeg for confirmatory testing.

The individual is a teenager from the Fraser Health region who is receiving care at B.C. Children’s Hospital. A public-health investigation has been initiated to determine the source of exposure and identify any contacts, the release said.

“This is a rare event, and while it is the first detected case of H5 in a person in B.C. or in Canada, there have been a small number of human cases in the U.S. and elsewhere, which is why we are conducting a thorough investigation to fully understand the source of exposure here in B.C.,” said Dr. Bonnie Henry, B.C.’s provincial health officer.

Public health is following up with contacts who may have been exposed in order to assess for symptoms and provide guidance on testing and prevention measures. The B.C. government said the source of exposure is very likely to be an animal or bird, and is being investigated by B.C.’s chief veterinarian and public health teams.

Health, animal and environmental partners across B.C. have been working together and with the Canadian Food Inspection Agency and other national and U.S. partners to respond to the increased detections of H5N1 avian influenza in poultry farms and wild birds in the province since early October.