By Erin Banco, Adam Cancryn and Sarah Owermohle

A looming shortage of doses for low- and moderate-income countries puts increased pressure on Novavax to obtain regulatory approvals for global manufacturing.

A looming shortage of doses for low- and moderate-income countries puts increased pressure on Novavax to obtain regulatory approvals for global manufacturing.

A looming shortage of doses for low- and moderate-income countries puts increased pressure on Novavax to obtain regulatory approvals for global manufacturing.

A looming shortage of doses for low- and moderate-income countries puts increased pressure on Novavax to obtain regulatory approvals for global manufacturing.

A looming shortage of doses for low- and moderate-income countries puts increased pressure on Novavax to obtain regulatory approvals for global manufacturing.

A looming shortage of doses for low- and moderate-income countries puts increased pressure on Novavax to obtain regulatory approvals for global manufacturing.

A looming shortage of doses for low- and moderate-income countries puts increased pressure on Novavax to obtain regulatory approvals for global manufacturing.

U.S. officials bet on Novavax to provide a shot that could easily be shipped overseas. But its manufacturing problems have left global distributors without enough shots for poor and middle-income countries.

U.S. officials bet on Novavax to provide a shot that could easily be shipped overseas. But its manufacturing problems have left global distributors without enough shots for poor and middle-income countries.

U.S. officials bet on Novavax to provide a shot that could easily be shipped overseas. But its manufacturing problems have left global distributors without enough shots for poor and middle-income countries.

The Biden administration has urged Moderna for months to increase its production domestically.

The Biden administration has urged Moderna for months to increase its production domestically.

The Biden administration put the highly anticipated guidelines on hold last week in part over concerns about the wording and the recommendations around quarantining.

The Biden administration put the highly anticipated guidelines on hold last week in part over concerns about the wording and the recommendations around quarantining.

The Biden administration put the highly anticipated guidelines on hold last week in part over concerns about the wording and the recommendations around quarantining.

The Biden administration put the highly anticipated guidelines on hold last week in part over concerns about the wording and the recommendations around quarantining.