By Carmen Paun

The rollout of Covid-19 vaccines to roughly 19 million young children is the last step in making shots available to the entire U.S. population.

African Union officials have complained about the lack of vaccines since the U.S., U.K. and EU pre-purchased the bulk of available supplies at the end of 2020.

African Union officials have complained about the lack of vaccines since the U.S., U.K. and EU pre-purchased the bulk of available supplies at the end of 2020.

The administration is replacing the vaccine with 55 million doses of those already cleared for use in the United States.

The administration is replacing the vaccine with 55 million doses of those already cleared for use in the United States.

Poor countries and global health advocates have been pushing wealthy nations to share some of their supply, warning that the inequitable vaccine rollout could leave them playing catch-up for years.

Poor countries and global health advocates have been pushing wealthy nations to share some of their supply, warning that the inequitable vaccine rollout could leave them playing catch-up for years.

Poor countries and global health advocates have been pushing wealthy nations to share some of their supply, warning that the inequitable vaccine rollout could leave them playing catch-up for years.

Poor countries and global health advocates have been pushing wealthy nations to share some of their supply, warning that the inequitable vaccine rollout could leave them playing catch-up for years.