Express News Service BENGALURU: With an exponential rise in the number of Covid-19 cases in the state, Dr Vishal Rao U S, Head and Neck Oncologist and member of the state Covid Task Force, talks on how bad the second wave will be and the possible reasons for the surge What is the difference between the first and second wave? One of the most important differences is that the first wave initially spread slowly due to early stringent government measures coupled with strong citizens’ vigilance. People mostly did follow stringent measures like using masks, ensuring well-ventilated environments, minimising social activities, leading to lower number of Covid cases.