India is seeing an uptick in Covid cases with the daily figures crossing the 4,000-mark for the last two days. Maharashtra is among the states leading the surge and has recorded its highest number of cases since January 30. Dr Rahul Pandit, a member of the National Covid Task Force, weighs in on the reasons for this sharp rise -- whether a fourth wave is imminent, symptoms to look out for, and how you can keep yourself safe. While it is too soon to comment on whether fourth wave has set in, people need to mask up and take all precautions, especially in gatherings, he says.