New Delhi:30 Jan 21 Serum Institute of India, the world’s biggest vaccine maker, is hopeful of launching Covovax – developed in partnership with American vaccine developer Novavax – by June, its CEO Adar Poonawalla said today. The US-based pharma firm’s Covid jab was found to be 89.3 per cent effective in a UK trial.The Pune-based Serum Institute has already applied for local trials for the vaccine candidate in India. “Our partnership for a COVID-19 vaccine with @Novavax has also published excellent efficacy results. We have also applied to start trials in India. Hope to launch #COVOVAX by June 2021!” Adar Poonawalla tweeted this afternoon,” Mr Poonawalla’s tweet read.Earlier this month, India began the world’s largest inoculation drive after the drug regulator DCGI cleared two vaccines – the SII’s Covishield and Hyderabad-based pharma firm Bharat Biotech’s Covaxin.