coronavirus February 1, 2020 6:55 am Coronavirus Declared U.S. Public Health Emergency The illness, which originated in China, has shut down international flights and led to a spike in sale of hospital masks. US & World Videos 3:41 Cool air to linger over Boston into the weekend 2:28 Karen Read trial continues, jurors visit crime scene 2:44 Karen Read trial Day 4: Jurors to visit crime scene 1:30 Bruins lose Game 6 in Toronto 4:28 State Department apologizes to family of man imprisoned last year in Turks and Caicos