Many universities now require masks and vaccinations – and some schools have moved instruction online, at least for now.

As universities and colleges in the United States open for the fall semester, even those institutions requiring masks and vaccinations are grappling with unexpectedly high rates of Covid.

In one high-profile example, the University of Delaware sent a message to faculty this week, instructing them not to let students know if their classmates test positive for Covid-19 even though cases are rising on campus. Read more at The Guardian.