By MARK LORENZANA Mexican daily newspaper Reforma, on Saturday, Sept. 25, reported that 5.4 million covid-19 vaccines had expired in Mexico and are set to be thrown away. Of the total wasted vaccines, 3.4 million are of the AstraZeneca brand, donated by the U.S. government, and stored in a warehouse of the Biological and Reagent Laboratories of Mexico (Birmex) in Cuautitlán Izcalli, in