Biden Says He’ll Ask Americans to Wear Masks for 100 Days After He Takes Office

President-elect Joe Biden said he would ask Americans to wear masks for the first 100 days after he takes office, as he sets up his administration’s coronavirus response.

“I’m going to ask the public for 100 days to mask, just 100 days to mask, not forever,” Mr. Biden told CNN Thursday. “And I think we’ll see a significant reduction.”

Mr. Biden is also expected to tap Jeffrey Zients, a former Obama administration economic adviser, for a senior White House role overseeing the administration’s coronavirus response, according to people familiar with...