As coronavirus infections rise in some parts of the world, experts are watching for a potential new COVID-19 surge in the U.S. and wondering how long it.
With coronavirus cases rising in parts of Europe and Asia, scientists worry that an extra-contagious version of the omicron variant may soon push cases up in the United States too.
As coronavirus infections rise in some parts of the world, experts are watching for a potential new COVID-19 surge in the U.S. and wondering how long it.
As coronavirus infections rise in some parts of the world, experts are watching for a potential new COVID-19 surge in the U.S. and wondering how long it.