The Columbia University team's findings suggest inflammation may trigger neurologic damage but the virus' long-term impact is unknown.

"(President Biden) is ready for big ideas and bold action, so that all Americans can go to community college and have the support they need to finish and get good jobs," Jill Biden said. "Together we are going to get this done because community colleges are our future."

Georgetown, George Washington, American and Bowdoin are among the latest group requiring students to get vaccinated. Many others are still deciding.

Mike Huseby, the CEO of Barnes & Noble Education, discusses the value of colleges and universities forging strategies over the next decade to meet student needs.