Changing Vaccine Strategies as Herd Immunity Seems Improbable: The Lineup

Forget about herd immunity. A growing number of health experts say Covid-19 vaccination rates aren’t keeping up with virus mutations. How experts are refocusing their efforts to keep us safe. Plus, a deadly metro collapse in Mexico, searching for staff at the Jersey Shore, and the Starbucks order that pushed a barista over the edge. This is The Lineup for Tuesday, May 4, 2021.