New Delhi, Jan 17, 2021- Apart from Covishield, the Serum Institute of India (SII) is working on four more vaccines against the novel coronavirus, according to Suresh Jadhav, executive director at one of the world’s largest vaccine manufacturers. Jadhav informed during a webinar that the firm has been working on five vaccines against the novel … Continue reading 4 more Covid vaccines in different stages of trial: Serum Institute of India