As bird flu spreads in cows, here are 4 big questions scientists are trying to answer

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Government: Oregon Public Broadcasting

As bird flu spreads in cows, here are 4 big questions scientists are trying to answer

It's been a month since the surprising discovery of bird flu in dairy cattle, and each week seems to bring more surprises.Take the latest revelation: viral fragments in retail milk.Scientists don't view this as an immediate threat to human health.Genetic material is not the same as infectious virus and pasteurization is expected to inactivate the virus in milk, but the findings speak to the broader uncertainty about the extent of the spread."The…