This colourized electron microscope image released by the National Institute of Allergy and Infectious Diseases on March 26, 2024, shows avian influenza A H5N1 virus particles (yellow), grown in Madin-Darby Canine Kidney (MDCK) epithelial cells (blue).
B.C. health officials say they still don't know how a teenager became infected with the H5N1 strain of avian flu, believed to be the first such case in Canada. The teenager is still in critical condition, the province says, adding that no further cases have been identified.B.C. health officials say they still don't know how a teenager became infected with the H5N1 strain of avian flu, but say no further cases have been identified.
Earlier this month, health officials announced they were investigating what was believed to be the first human case of H5N1 avian influenza caught in Canada.The Ministry of Health says the teen is from the Fraser Health region, which includes several of Vancouver's eastern and southern suburbs and the Fraser Valley.
According to the ministry, avian influenza — also known as bird flu — is a virus that primarily affects birds but can occasionally spread to humans through contact with infected animals or contaminated environments.The Canadian Food Inspection Agency says that as of Nov. 20, 54 sites in B.C. were actively dealing with avian flu infections — the highest number among provinces.
The investigation determined that the strain the teen contracted closely matches the strain found in wild birds in the Fraser Valley area in October, and was not directly related to outbreaks at poultry farms in B.C.Since early October, the H5N1 virus has been detected in animals at numerous sites in B.C., including 22 poultry farms and in a variety of wild birds and small mammals such as foxes and skunks.
Since 1997, over 900 human cases have been reported globally, primarily in Asia and Africa, with about half of them resulting in death, according to Health Canada. However, the government cautions this fatality rate may be overestimated, as mild infections can often go undetected and underreported.In light of the confirmed cases among animals in B.C.
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