Government vaccine advisers are meeting to decide if the recipe for COVID-19 vaccines needs updating for this fall and winter.

The head of the Food and Drug Administration said the agency will soon unveil a new framework detailing what companies must do to seek approval of vaccines, a move that comes as the Trump administration has introduced uncertainty into the annual process for green-lighting updated coronavirus shots traditionally offered in the fall.

Seattle vaccine experts were confused by the country's apparent new direction around updated COVID-19 shots, which top FDA officials revealed Tuesday.