Numbers of incidental infections could form significant percentage of total hospitalizations. States throughout the U.S. are failing to distinguish between patients hospitalized because of COVID-19 and patients who merely test positive for the disease while being hospitalized for other reasons. Hospitalizations have for months been viewed as one of the critical indicators of the coronavirus pandemic: Countries worldwide have relied heavily on the number of patients sent to hospitals because of the virus as a way of measuring how severe a region or a nation's outbreak really is. Yet many, if not most, states are failing to make the distinction...