The coronavirus continued its unrelenting spread across the United States with fatalities doubling in two days and authorities saying Saturday that an infant who tested positive had died. It pummeled big cities like New York, Detroit, New Orleans and Chicago, and made its way, too, into rural America as hotspots erupted in small Midwestern towns and Rocky Mountain ski havens. Worldwide infections surpassed the 660,000 mark with more than 30,000 deaths as new cases also stacked up quickly in Europe, according to a tally by Johns Hopkins University.
