Jonathan Lambert

Because of that, some experts worried the U.S.

could lose influence in shaping the composition of the vaccine.

The CDC did send representatives, albeit virtually, to the meeting which concluded on Friday.

The updated shot will include several strains that heavily affected the U.S.

during this flu season.

If approved by FDA, the vaccine will be available in the fall.

Jonathan Lambert, NPR News.

The WHO coordinates a global network of labs that monitor how flu is evolving.

Twice a year, scientists come together to make sense of all that data and recommend updated vaccines.

The U.S.

historically plays a major role in those meetings.

But in the run-up to this one, it wasn't clear whether they'd even show.

Because of that, some experts worried the U.S.

could lose influence in shaping the composition of the vaccine.

The CDC did send representatives, albeit virtually, to the meeting, which concluded on Friday.

The updated shot will include several strains that heavily affected the U.S.

during this flu season.

If approved by FDA, the vaccine will be available in the fall.

Jonathan Lambert, NPR News.

NPR's Jonathan Lambert reports.