Biden’s Vaccine Mandate Risks Overwhelming U.S. Testing Capacity

The U.S. may not have enough tests to keep pace with the Biden administration’s tightened workplace Covid-19 mitigation measures.

Under regulation expected in the coming weeks, companies with 100 or more employees will need to require that workers get vaccinated or undergo weekly testing. That could represent nearly double the volume of tests currently being processed, and may make already hard-to-find rapid tests more scarce and lengthen wait times in lines and for results.

“We’re going to get logjammed,” said Michael Mina, an epidemiologist with the Harvard T.H. Chan School of Public Health. “We’re going to have major problems. ...