Exclusive reporting reveals how the United States lost track of a virus that could cause the next pandemic. Problems like the sluggish pace of federal action, a deference to industry, and neglect for the safety of low-wage workers put the country at risk of another health emergency.
Keith Poulsen’s jaw dropped when farmers showed him images on their cellphones at the World Dairy Expo in Wisconsin in October. A livestock veterinarian at the University of Wisconsin, Poulsen had seen sick cows before, with their noses dripping and udders slack.