- Bird Flu Spreads to California Dairy CowsMercury News
- Bird flu confirmed at three Central Valley dairy farms, state’s first cases, officials sayFresno Bee
- Bird flu infects California dairy cows, spreading outbreak across USReuters
- Bird flu (H5N1) explained: California farms quarantined after virus strain detected in dairy herdsForbes
- Officials detail H5N1 outbreaks at Colorado poultry plantsUniversity of Minnesota Twin Cities
