In this episode, we take a look at the issues related to rapid antigen tests, as several States, led by Delhi, have started to rely on this form of testing to collate data related to positive cases. What is it not telling us? We also discuss two serological surveys, from Delhi and Mumbai respectively, and what they tell us about the effects of the disease.Guest: Srinivasan Ramani, Deputy National Editor, The Hindu.Find the In Focus podcast on Spotify, Apple Podcasts and Stitcher. Search for In Focus by The Hindu.Write to us with comments and feedback at socmed4@thehindu.co.in Learn more about your ad choices. Visit megaphone.fm/adchoices