Biden’s School-Reopening Plans at Risk on Sports-Tied Outbreaks

The coronavirus pandemic is erupting anew in youth sports across the U.S., prompting fresh warnings from President Joe Biden’s health advisers and adding a headwind to his push to reopen classrooms.

Several states have faced recent outbreaks linked to sporting events and to a variant of the virus from the U.K. called B.1.1.7. Michigan is an epicenter both of the latest surge and the U.K. variant, which is regarded as more transmissible than the original strain of the virus and may be deadlier.

Elementary, middle and high schools have driven the outbreak in Michigan more than any other setting, ...