AstraZeneca vaccine not very effective for people over 65, German officials say
প্রকাশিত: ২৬ জানুয়ারি ২০২১, ২০:২৮
AstraZeneca's COVID-19 vaccine is not very effective for people over 65, German coalition sources told tabloid Bild and Handelsblatt, a step which calls into question its suitability in mass vaccinati...