US health agencies launch new studies of H5N1 bird flu in dairy workers and dairy products CNNUSDA confirms more H5N1 detections in dairy herds and cats cidrap.umn.eduInfectious avian influenza hits Idaho cows, dairy farms Idaho StatesmanUS food safety regulators expand bird flu testing in milk products ReutersThe risk from H5N1 has never been greater – but making our farms bio-secure is harder than it seems The Telegraph