Britain on December 30 became the first country in the world to approve a coronavirus vaccine developed by Oxford University & AstraZeneca as it battles a major winter surge driven by a new, highly contagious variant of the virus. AstraZeneca said the authorisation was for a two dose regime, and that the vaccine had been approved for use for emergency supply. Britain has ordered 100 million doses of the vaccine. Argentina has followed Britain to become only the second country to authorize the coronavirus vaccine developed by drug firm AstraZeneca and Oxford University, the government said on December 30. Argentina has followed Britain to become only the second country to authorise the coronavirus vaccine developed by drug firm AstraZeneca and Oxford University. It\'s the third COVID-19 vaccine to receive approval in Argentina after the Pfizer/BioNTech and Russian Sputnik V immunizations.