EXPLAINER: UN vaccine plan for poor countries nears rollout

GENEVA (AP) — It’s nearly launch time for COVAX, the United Nations' unprecedented program to deploy COVID-19 vaccines for hundreds of millions in need around the globe.

More than two months after countries like Britain and the United States started immunizing their most vulnerable people, the U.N.'s health agency gave its approval Monday to a vaccine developed by Oxford University and AstraZeneca, which should trigger the release of hundreds of millions of doses by COVAX.

COVAX missed its own target of starting vaccination in poor countries at the same time as immunizations were rolled out in rich countries, and numerous developing countries have signed their own deals to buy vaccine, fearing the program won't deliver.

The World Health Organization and partners hope COVAX can finally start shipping out vaccines later this month.

Here’s a look at the project:

WHAT IS COVAX, AND WHY DOES IT MATTER?

It's a cooperative program aimed to make sure low- and middle-income countries get equitable access to COVID-19 vaccines. Some buy them, others get them for free thanks to donor countries and charities.

COVAX hopes to deploy some 336 million doses by the end of June, and around 2 billion doses by the end of the year.

WHO chief Tedros Adhanom Ghebreyesus said last week that over 130 million doses of vaccine have been deployed globally — three quarters of them in only ten countries. Almost 130 countries with 2.5 billion people haven't administered a single dose, he said.

WHY IS WHO ‘EMERGENCY USE’ APPROVAL IMPORTANT?

Unlike most wealthy nations, many developing countries don’t have the resources to assess whether vaccines should be approved. They rely on the WHO to determine if vaccines are safe, effective and have been made properly.

The most impactful moment...