In this episode, we will discuss about Serum Institute of India, or SII, a pharmaceutical company that is producing the largest quantity of vaccines, globally. SII was started by Cyrus Poonawala in 1966 keeping in mind the motto of providing high quality, low cost vaccines to the people. SII has been at the forefront for the fight against Covid-19 by developing and manufacturing one of the most effective vaccines being used all around India, COVISHIELD.