The Food and Drug Administration said Thursday that traces of the bird flu virus have been found in 1 in 5 samples of pasteurized milk, providing a more detailed picture of how much of the milk supply has been affected.
The tested milk came from a nationally representative sample, with more of the positive results coming from milk in areas with infected herds of dairy cows, the FDA said. A spokesperson declined to say how many samples were tested.
As of Thursday, bird flu had been detected in 33 herds in eight states: Idaho, Kansas, Michigan, New Mexico, North Carolina, South Dakota, Ohio and Texas.
Richard Webby, an influenza virologist at St. Jude Children’s Research Hospital, said the number of positive samples is consistent with…
