Prater reiterated that the FDA hasn't changed its assessment that the nation's milk supply remains safe. So far, early work on milk samples that were positive for H5N1 fragments haven't found any viable (potentially infectious) virus.
He said, however, that the FDA still has a long list of data gaps to fill, including identifying the risk of infection to humans via oral consumption and validating that existing pasteurization methods can inactivate H5N1.