AstraZeneca firma primer acuerdo de suministro de potencial vacuna de Covid-19 en China Pablo Perez agosto 6, 2020 FILE PHOTO: The logo for pharmaceutical company AstraZeneca at the New York Stock Exchange in New York, U.S., April 8, 2019. REUTERS/Brendan McDermid/File Photo Clique aqui para ver articulo original Author: Pablo Perez
