President Trump has selected Gerald Parker, a veterinarian and former top-ranking federal health official, to head the White House's pandemic office, two U.S. officials tell CBS News. Congress created the White House Office of Pandemic Preparedness and Response Policy after the COVID-19 pandemic. As part of one of the lessons learned from the outbreak, the office was intended to formalize the so-called czar roles that had led efforts across the federal government to prepare and respond to pandemic threats. Parker was previously the associate dean for Global One Health at Texas A&M University. "One Health" refers to the study of...