Pune-headquartered Serum Institute of India (SII), the world’s largest vaccine maker by quantity, has been in the spotlight, having committed itself to supplying 3.2 billion doses of the Covid-19 vaccine. This is more than double the company’s FY20 production of 1.5 billion doses. Apart from global agencies like Geneva-based Gavi (earlier called Global Alliance for Vaccines and Immunisation) procuring from SII, the Indian vaccination programme too will bank on it. In an e-mail interview with Sohini Das, Adar Poonawalla, chief executive officer, Serum Institute of India, says the firm is not raising additional capital through private equity. SII is researching