Dr Lancelot Pinto, Consultant Pulmonologist and Epidemiologist, Hinduja Hospital answers questions asked by the viewers on the Delta variant (B.1.617.2) of COVID-19 that was first spotted in the country in October 2020. It was recognised as a 'variant of concern' by the World Health Organisation (WHO) on May 11, 2021. According to Dr Pinto, the Delta variant is almost twice as transmissible as the original variant.