Sanjoy Bhattacharya is an academic specializing in the history of medicine and public health, with a focus on South Asia. As a Professor of Medical Humanities at the University of York, UK, he has extensively researched and published on global health initiatives. In "Expunging Variola: The Control and Eradication of Smallpox in India 1947-1977," he documents the historical efforts and strategies employed in India to successfully control and eradicate smallpox.