Warqad ka timid Professor Jonathan Van Tam (Madaxa Caafimaadka UK, Waaxda Caafimaadka iyo Daryeelka Bulshada) iyo Antonia Williams (Agaasimaha, Ilaalinta Degdegga ah iyo Caafimaadka, DHSC), ee ku saabsan tallaalka AstraZeneca AZD1222 COVID-19, oo ku taariikhaysan 22/12/2020.