Dr. Birx to Thanksgiving travelers: 'Assume that you were exposed'
By Madeline Holcombe and Holly Yan | CNN With more than 1 million travelers dispersing across the country in one day, health experts are asking those who gathered with people outsi…
By Madeline Holcombe and Holly Yan | CNN With more than 1 million travelers dispersing across the country in one day, health experts are asking those who gathered with people outsi…