April 21, 2021 at 1:00 pmUpdated April 21, 2021 at 1:01 pmByJAMES GORMANThe New York Times
When a bird flu virus struck a major poultry farm in Russia earlier this year, it was a reminder that the coronavirus causing the pandemic was not the only dangerous virus out there.
The authorities quickly tested the birds and moved into high gear, killing 800,000 chickens, disposing of the carcasses and cleaning the farm to stop the potential spread to other chicken farms. But they were also concerned for humans.
They tested the birds and sequenced the virus, determining that it was the H5N8 strain of avian flu, highly dangerous to both wild and domestic birds. It is established in Asia and has been increasingly causing deadly outbreaks in birds in Europe. H5N8 viruses have infected some poultry flocks in the United States, but the viruses come from a different…
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