Business Today Television speaks with Dr.Sajjan Singh Yadav, additional secretary, Ministry of expenditure from Department of Finance who recently launched his book, "India's vaccine growth story: "From Cowpox to Vaccine Maitry." The book traces India’s centuries-long journey as the torchbearer of the world in vaccine development and inoculations. It has numerous stories of the birthing of various vaccines too. The book also discusses the development of vaccines by India at a fast pace to counter the COVID-19 pandemic and the launch of the world’s biggest vaccination drive by our country. Other topical issues like vaccine diplomacy, vaccine economy, vaccine hesitance, and vaccine leadership have also been eloquently covered in the book with interesting stories and anecdotes.