The Wall Street Journal first reported that according to a classified intelligence report provided to the White House, the Energy Department has concluded that COVID-19 "most likely arose from a laboratory leak." New COVID-19 booster shots could be available as early as Tuesday, but it's still unclear who should get them.
Pfizer, Moderna and smaller manufacturer Novavax have all produced doses that contain one version of the omicron strain, called XBB.1.5.
It’s no longer the dominant strain in the U.S., but the new versions are still expected to offer strong protection against severe illness as case numbers and hospitalizations rise.
A pharmacist delivers a COVID-19 booster dose at a Chicago CVS store in October. (Antonio Perez/Chicago Tribune/Tribune News Service via Getty Images) The Food and Drug Administration will have to sign off on each, and the U.S.