The sales suspension comes as human cases of dangerous H5N1 bird flu have risen across the country. The Centers for Disease Control and Prevention says there were 55 cases across seven states as of Friday. The majority of the cases are in California.

New research and discussions with dairy farmers in the Central Valley suggests H5N1 bird flu is more widespread among people than the reported numbers indicate.

The H5N1 virus was found in a sample of unpasteurized milk at a store, prompting a recall of one batch. Health agencies have warned against the growing dietary fad.