http://www.newsweek.com/covid-delta-variant-death-rates-what-we-know-so-far-1618350 > The "overwhelming majority" of current COVID deaths in the U.S. are due to the Delta variant, an expert has said—but exact figures are difficult to calculate. > Centers for Disease Control and Prevention (CDC) figures suggest that the Delta variant and its subtypes accounted for more than 90 percent of new U.S. COVID cases surveyed in the two weeks to July 31.