Dead cows infected with bird flu must be separated from their herds, which the video showed, the California Department of Food and Agriculture (CDFA) said in emailed responses. The cows must be stored on private property before being transported for “disposal” and should not be buried underground, the email said.

The number of people infected with bird flu in the U.S. has risen to at least 31, federal health officials said Thursday, but there is no evidence of human-to-human spread after blood tests