Two new cases of coronavirus have been reported in Delhi and Telangana and there is one suspected case in Rajasthan. One of the passengers of an Air India flight from Vienna to Delhi on February 25 is suspected to be infected. On the show, we spoke to Dr Soumya Swaminathan, WHO Chief Scientist, who says that scientists are still learning on a day to day basis how this virus behaves and how vaccines are still far away.