COVID-19: Kepala petugas medis Chris Whitty memperingatkan kekurangan vaksin virus

Undated handout file photo issued by the University of Oxford of a volunteer being administered the coronavirus vaccine developed by AstraZeneca and Oxford University. The vaccine, which has been described as a "game changer", has now been approved for use in the UK by the Medicines and Healthcare products Regulatory Agency (MHRA).