http://www.newsweek.com/us-covid-vaccination-rate-lagging-doomsday-variant-delta-1616553 > Coronavirus continues to spread across the U.S., with the country reporting more than 100,000 new daily cases on Tuesday—the second time it has done so in a week. > The Delta variant continues to be at the forefront of this wave of infections. According to Centers for Disease Control and Prevention data, the variant accounted for more than 83 percent of new cases in the two weeks to July 31. That figure rises to 93 percent when Delta's sub-strains are included.