As coronavirus vaccine Covishield readies for rollout, Serum Insititute's Adar Poonawalla tells us more about the magic vial in this exclusive conversation with Rahul Kanwal. Serum Institute of India has already produced around 50 million dosages of the Oxford-AstraZeneca COVID-19 vaccine 'Covishield' and plans to scale it up to 100 million by March next year even as it awaits approval for emergency use authorisation, a top company official said on Monday. Watch the video.