'The percentage of cows in the U.S. that have antibodies to influenza D is way, way high ... Whenever you look at herds, about 50% of individual cows have high levels of antibodies to this virus. That was really surprising.'
Now, no one knows yet if influenza D causes any symptoms in people. But altogether, these studies indicate influenza D is likely what's called an emerging virus, Leibler says. It's jumping into people who work with animals, such as dairy farmers, but it's not likely spreading much beyond that.
For that reason, Leibler and her colleagues are calling for more research on, and surveillance of, this new flu to ensure the safety of the dairy workers but also to ensure that the virus doesn't surprise the world as SARS-CoV-2 did. Currently, at least one company – Cambridge Technologies – is working on a vaccine against influenza D for animals. But in general, very few farms are looking out for the virus in animals or workers, Jessica Liebler says.
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