KGO ABC World News Tonight With David Muir March 18, 2020 00:40:00
In a national emergency. >> jon, thank you. tonight we're following news that an emergency room doctor tested positive just days after attending a conference of hundreds of doctors in new york city. here's matt gutman. >> reporter: tonight, fear for the safety of health workers on the front lines after hundreds may have been unintentionally exposed to the virus in at least two medical conferences. one in new york's times square, bringing together hundreds of e.r. physicians and medical teachers. this e.r. doctor, rosny daniel, says he felt symptoms after returning home to san francisco and t...