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.

Cows in California are dying at much higher rates from bird flu than in other affected states, industry and veterinary experts said, and some carcasses have been left rotting in the sun as rendering plants struggle to process all the dead animals.

Health officials say there’s no evidence bird flu is spreading between people after investigating a mysterious Missouri infection.

Two people sharing a home caught the virus without known exposure to animals. More than 30 human cases have been reported in the United States.

Human bird flu cases in California may be undercounted as farm workers avoid testing due in part to economic concerns, according to a labor union and a state expert. Since early October, bird flu has infected 15 dairy farm workers in California,

The agency also ruled out bird flu infections among healthcare workers who tended to a person who contracted the virus in Missouri, officials said in a press call. All 31 cases of

The bird flu virus hasn't yet spread from person to person, the CDC said Thursday, releasing findings from a monthslong probe into a hospitalized Missouri patient.