Covaxin by Bharat Biotech and Covishield by Serum Institute of India. Earlier, Britain and Argentina had approved the emergency marker use of coronavirus vaccine developed by the University of Oxford and AstraZeneca.
Serum Institute of India, the world's largest vaccine manufacturer by volume, joined hands with British-Swedish drugmaker to produce 1 billion doses of its COVID-19 vaccine.
The local version of Oxford-AstraZeneca COVID-19 vaccine will be known as Covishield.The 'virus-vectored' vaccine uses a weakened version of a chimpanzee common coldvirus that encodes instructions for making proteins from the novel coronavirus to generate an immune response and prevent infection.