Oxford University and AstraZeneca by the end of August on up to 5,000 Indian volunteers after getting the necessary nods, and launch the vaccine by June next year if all goes well.The Pune-based company's chief executive Adar Poonawalla said the company, which is the largest vaccine maker in the world, is putting USD 200 million at risk by manufacturing nearly 300 million doses before the final nod to launch the vaccine in market, which is expected at best by the end of the year.Oxford University on Monday announced satisfactory progress with the vaccine, making it one of the leading ones among the dozens of vaccine candidates being developed around the world.The varsity has tied up with Serum Institute of India (SII) to manufacture and.