A bird flu outbreak that has resulted in the euthanasia of more than 200,000 animals in three Southern states already is the nation's worst since 2015 and new cases are still popping up, an expert said Wednesday.
Agriculture officials are trying to limit the damage from the disease, but it's unclear whether quarantines, transportation bans and mass killings will stop the spread, said Joseph Hess, a poultry science professor at Auburn University.
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