The coronavirus vaccine jointly developed by AstraZeneca and the University of Oxford will be sold at USD 3-4 per shot (Rs 219-292) to the government and will be priced at double that rate in the private market once such sales open up, said the CEO of its Indian manufacturer on Monday. Serum Institute of India (SII), the world's largest vaccine manufacturer, has a licence to produce the shot in India and has already manufactured close to 50 million doses.