Covishield Developer:Covishield has been developed by the Oxford-AstraZeneca and is being manufactured by the Serum Institute of India (SII). Preparation: Covishield has been prepared using the viral vector platform which is a totally different technology. A chimpanzee adenovirus – ChAdOx1 has been modified to enable it to carry the COVID-19 spike protein into the cellsContinue reading “Comparison between covishield and covaxin”
blockchain based certificate validation 