NDTV takes you inside Serum Institute of India where the Covishield vaccine is manufactured. The Executive Director of SII, Dr Suresh Jadhav speaks to NDTV and says, "their relationship with Oxford Institute is over 5 years old and that they are familiar with top scientists of the university." Speaking about the Covid-19 vaccine tie-up, Mr Jadhav says, "The Oxford Covid-19 vaccine was ready by March-end and that Oxford University wanted SII's help in mass production of their vaccines."