But the scope of the outbreak among cattle remains uncertain, and little human testing has been done.But the scope of the outbreak among cattle remains uncertain, and little human testing has been done.Read MoreTests (Medical), Avian Influenza, Agriculture and Farming, Dairy Products, Food Contamination and Poisoning, Workplace Hazards and Violations, Livestock, Food, Cattle, Meat, Viruses, Migrant Labor (Agriculture), Disease Rates, Beef, Milk, Livestock Diseases, Cheese, Agriculture Department, Centers for Disease Control and Prevention, Food and Drug AdministrationNYT > Health