Although the viruses largely affect birds, they can spill into bird predators, and in rare cases, humans typically in close contact with infected birds.
LONDON, United Kingdom – UK researchers have homed in on a human gene implicated in thwarting most bird flu viruses from infecting people.
They zeroed in on a gene called BTN3A3, expressed both in the upper and the lower human respiratory tract. Nicknamed B-force by the researchers, the gene was found to block the replication of most strains of bird flu in human cells.This gene is part of a broader defensive apparatus in the human immune arsenal against bird viruses.
To be sure, viruses mutate all the time, and this does not mean that bird flu viruses could not evolve to escape the activity of BTN3A3.
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