Nearly every day for three weeks, Dr. Deborah Birx has stood next to next to Vice President Mike Pence as part of the White House's efforts to battle the coronavirus pandemic that has killed more than 100 Americans. Though her name may have been largely unknown to most Americans before the COVID-19 outbreak, she's been working to fight the spread of communicable diseases on behalf of the U.S. government for well over three decades. Birx, 63, a Pennsylvania native, brings a long military career and medical background in immunology to her new role. In addition to being the White House...