An influenza virus present in Siberian sturgeon has a genetic sequence near that of an ancestral influenza virus.
Christian GUY/imageBROKER/Alamy
A flu virus present in sturgeon implies that flu viruses originated in fish about 600 million years in the past and developed with their hosts to contaminate all kinds of species at present.
Influenza viruses trigger illness in lots of vertebrates, together with people, birds, cats, whales and dolphins, however little is thought about how they first developed.
Researchers in 2018 detected a virus from a hagfish it appeared like a presumed ancestral kind…
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