Omicron may produce less chance of hospitalization. But high transmissibility means those at higher risk, such as the unvaccinated, could be infected.

As a record number of Americans are infected with Covid-19, largely due to the rapidly spreading Omicron variant, some states’ health care systems are beset with nearly full intensive care units.

As a record number of Americans are infected with Covid-19, largely due to the rapidly spreading Omicron variant, some states’ health care systems are beset with nearly full intensive care units.