As America scrambled to understand the scope of an escalating public health crisis, the number of known coronavirus cases surpassed 1,000 on Tuesday, signaling that the virus was spreading widely in communities on both coasts and in the center of the country. As of Wednesday evening, at least 1,190 people in 41 states and Washington, D.C., have tested positive for coronavirus, according to a New York Times database, and at least 37 patients with the virus have died. The first known U.S. coronavirus case was announced on Jan. 21 in Washington State, but the pace of diagnosis has quickened significantly...