Sports leagues around the world have seen a surge of positive coronavirus tests, leading to postponed games and hollowed out rosters. But we are a long way from March 2020, on several levels. With vaccines, boosters and rapid tests, leagues are rewriting their policies and taking concerted action to curb the spread of the omicron variant. ESPN’s Stephania Bell lays out impacts and changes in the NFL and other leagues. Then Dr. Joseph Allen, author of the book “Healthy Buildings” and public health expert at Harvard University, weighs the risks ahead for sports and society.

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