FILE - In this March 17, 2020 file photo, Christina Phillips, of Yonkers, N.Y., checks her smart phone as she waits for the 7:58 train on the Hudson line to leave Grand Central Terminal in New York. Reaction to the coronavirus, change came to the United States during the third week of March in 2020. It did not come immediately, though it came quite quickly. There was no explosion, no invasion other than a microscopic one that nobody could see. (AP Photo/Mary Altaffer, Fil…

March 21, 2020