Virus Outbreak Britain Vaccine

FILE – This undated file photo issued by the University of Oxford on Monday, Nov. 23, 2020, shows of vial of coronavirus vaccine developed by AstraZeneca and Oxford University, in Oxford, England. With major COVID-19 vaccines showing high levels of protection, British officials are cautiously — and they stress cautiously — optimistic that life may start returning to normal by early April. Even before regulators have approved a single vaccine, the U.K. and countries across Europe are moving quickly to organize the distribution and delivery systems needed to inoculate millions of citizens. (University of Oxford/John Cairns via AP, File)