CDC Scaled Back Breakthrough Hunt; Walmart Mandate: Virus Update

The U.S. Centers for Disease Control and Preventions stopped tracking the effectiveness of vaccines -- how many fully vaccinated people contract “breakthrough infections” -- in May, just as the troublesome delta variant was emerging. Bloomberg gathered data from 35 states and identified more than 100,000 breakthrough cases.

Walmart Inc. and Walt Disney Co., two of the largest private employers in the U.S., are requiring some staff to be vaccinated. Broadway theaters in New York City will also mandate vaccinations and masks for audience and performers.