https://www.cbc.ca/news/health/bird-flu-in-u-s-cows-caught-scientists-by-surprise-canadian-research-has-seen-it-coming-since-1953-1.7212587
Bird flu in U.S. cows caught scientists by surprise. Canadian research has seen it coming since 1953
Older lab studies showed flu viruses like H5N1 can spread through unusual routes, but may have been overlooked
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I have to admit that I thought I'd done a pretty thorough review of relevant papers, but this 1953 one referenced in the article was not on my list.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1791522/?page=1
