The U.S. has secured enough doses to immunize everyone in the country, while much of the world has little to no access to vaccines.

And many of their bosses are eager for them them to travel again, too.

A poll from the Pew Research Center found more than half of Americans think schools shouldn’t reopen until teachers are vaccinated.

Distribution of vaccines on campuses has sparked debate about whether students and faculty should be getting the shots.

Pfizer and others are collaborating to accelerate production. Johnson & Johnson and Novavax may receive FDA approval soon.

Especially the elderly and marginalized communities.

States like Tennessee are learning about the perils of scheduling vaccinations while vaccine supply is unpredictable.

With shortfalls in vaccine supplies, countries across the world are concerned about getting their fair share of doses.

Some of these companies have expertise, resources or logistical capacity that the federal government may lack.

Critics say the new approach won’t address underlying problems some states are having with vaccine rollout.