Farmworkers have been exposed to milk infected with the bird flu virus. But there has been virtually no testing on farms, and health officials know little about who may be infected.Farmworkers have been exposed to milk infected with the bird flu virus. But there has been virtually no testing on farms, and health officials know little about who may be infected.Read Moreyour-feed-science, Agriculture and Farming, Labor and Jobs, Federal-State Relations (US), Factory Farming, Foreign Workers, Protective Clothing and Gear, Disease Rates, Avian Influenza, Workplace Hazards and Violations, Food Contamination and Poisoning, Immigration and Emigration, Rural Areas, Meatpacking Plants and Slaughterhouses, Cattle, Viruses, Agriculture Department, Centers for Disease Control and Prevention, Idaho, Michigan, TexasNYT > Health