• The Biden administration announced it will send 55 million Covid-19 vaccine doses to countries in Latin America, Asia and Africa as the coronavirus continues to rapidly spread in low- and middle-income nations.
• The 55 million vaccine doses are the remaining portion of 80 million shots President Joe Biden has committed to donating abroad.
• Earlier this month, the administration said it would send the first 25 million doses to South and Central America, Asia, Africa, neighboring countries and U.S. allies.

The Biden administration announced Monday it will send 55 million Covid-19 vaccine doses to countries in Latin America, Asia and Africa as the coronavirus continues to rapidly spread in low- and middle-income nations.

The 55 million vaccine doses are the remaining portion of 80 million shots President Joe Biden has committed to donating abroad. Earlier this month, the administration said it would send the first 25 million doses to South and Central America, Asia, Africa, neighboring countries and U.S. allies.

The U.S. plans to allocate 75% of its initial 80 million doses through COVAX, the nonprofit that distributes vaccines mostly to poor countries, while the remaining shots will be sent to countries currently dealing with surges in new infections, the administration said Monday.

The administration said about 14 million doses will go to places in Latin America and the Caribbean, including Brazil, Argentina, Colombia, Peru, Ecuador, Paraguay, Bolivia, Uruguay, Guatemala, El Salvador, Honduras, Haiti, Dominican Republic, Panama and Costa Rica.

About 16 million will go to countries in Asia like India, Nepal, Pakistan, Afghanistan, Philippines, Vietnam, Indonesia, Malaysia, Laos and Thailand, the administration said. About 10 million doses will go to Africa and are expected to be shared with countries that will be selected in coordination with the African Union, it said.

Another 14 million will be shared with "regional priorities and other recipients" such as Iraq, Yemen, Tunisia and Ukraine, the administration said.

"Sharing millions of U.S. vaccines with other countries signals a major commitment by the U.S. government," the administration said in a release detailing its plan. "Just like we have in our domestic response, we will move as expeditiously as possible, while abiding by U.S. and host country regulatory and legal requirements."

The announcement Monday comes as more than half of the U.S. population has had at least one dose of a Covid vaccine, and new cases and deaths have fallen sharply.

As of Sunday, more than 177 million Americans, or 53.3% of the population, have had at least one shot, according to data compiled by the Centers for Disease Control and Prevention. More than 149 million Americans are fully vaccinated, according to the agency.

The pandemic outlook in other countries is more bleak, however, with some places such as Africa reporting an increasingly worrying rise in Covid cases.

The World Health Organization is urging wealthy nations to donate doses. Many countries have made pledges to share millions of shots around the world, but WHO officials say those doses need to make their way to low-income countries immediately and without delay.

Earlier this month, the administration said it would buy 500 million more doses of the Pfizer Covid vaccine to share through the global COVAX alliance to donate to 92 lower-income countries and the African Union over the next year.

The administration said the doses are vital "component of our overall global effort to lead the world in the fight to defeat COVID-19 and to achieve global health security."