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🚨 Canada's national lab confirms H5N1 in hospitalized teen
The Public Health Agency of Canada (PHAC) today announced that the National Microbiology Laboratory (NML) in Winnipeg has confirmed that the H5 avian flu detected in a British Columbia (BC) teen is the H5N1 virus.
Yesterday BC health officials said the previously healthy teen is hospitalized in critical condition.
Today's confirmation marks Canada's first locally acquired H5N1 infection.
Genetic sequencing suggests that the H5N1 virus is closely related to those circulating in BC poultry, meaning that it belongs to the 2.3.4.4b clade and to the D.1.1 genotype.
Western Canada and a handful of western US states have seen an uptick in poultry outbreaks related to spread of the virus from birds migrating south along the Pacific flyway. The genotype is different from the B3.13 virus that has infected US dairy cattle.
So far, no other human infections have been detected in Canada, and investigations are still under way to determine how the teen was exposed to the virus.
📚 https://www.cidrap.umn.edu/avian-influenza-bird-flu/canadas-national-lab-confirms-h5n1-hospitalized-teen
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🔴 Update on human bird flu case in Canada:
🔸Patient is currently in critical condition with acute respiratory distress.
🔸"This was a healthy teenager prior to this, so no underlying conditions"
🔸Initial symptoms were conjunctivitis, fever and cough
🔸Went to the emergency room on November 2 but was sent home. Symptoms kept getting worse and they were hospitalized on Friday night (Nov. 8)
🔸The source of the infection is still unknown
🔸"I must caution that there is a very real possibility we may not ever determine the source"
🔸Patient had contact with dogs, cats and reptiles. 1 dog was sick but tested negative. No contact with birds.
🔸No links to any farms. Did not travel to the U.S.
🔸About 35-40 known contacts during the infectious period, but so far no other cases have been found
🔸Patient tested positive for H5 bird flu. Presumed to be H5N1 but tests are still underway.
📚Update from B.C. Provincial Health Officer Bonnie Henry:
https://www.youtube.com/live/N88_JupS6v8?si=r8-3CuY8TnmTVrER
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⚠️🚨 Update:
H5N1 bird flu virus in Canadian teenager displays mutations demonstrating virus’ risk.
The virus, which appears not to have spread to anyone else, underwent mutational changes virologists didn’t want to see.
🚨Canadian teen’s bird flu infection is not the version found in cows.
https://www.statnews.com/2024/11/18/bird-flu-pandemic-h5n1-virus-mutations-canada-genomic-analysis/
https://www.canada.ca/en/public-health/news/2024/11/update-on-avian-influenza-and-risk-to-canadians.html
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