INFECTIOUS DISEASE

EXPLAINER: How US rules on international travel are changing

More than a year and a half after COVID-19 concerns prompted the U.S. to close its borders to international travelers from countries including Brazil, China, India, South Africa, the United Kingdom and much of Europe, restrictions are shifting to focus on vaccine status.

The rules on face masks at the office are changing

Some big U.S. employers have dropped workplace mask requirements as COVID-19 cases fall and vaccination rates rise. Staffers at other companies are wondering whether they can ditch masks, too.