Ebrard said at least some of the new U.S. doses will be used as second shots for elderly people who have already received AstraZeneca vaccines. Officials had said Thursday the U.S. shipment would include 2.5 million doses. Mexico has had difficulties getting enough vaccines, and has so far administered only 5 million doses, roughly equivalent to one dose for 4% of its population. But Mexico had previously been unwilling to impose them on the southern border or most flights entering Mexico. The restrictions coincide with a huge uptick in the number of Central American migrants reaching the U.S border through Mexico.

Source: ABC News March 19, 2021 20:03 UTC