Top doctors answer all your queries on vaccine immunity, the right gap between first and second dose of the vaccine, black fungus, steroid treatment and the role of ventilation at home to fight Covid-19. Joining Hindustan Times’ Senior Editor Aditi Prasad on the show are Dr Rommel Tickoo (Director, Internal Medicine at Max Healthcare) and Dr Amit Thadhani (Medical Director at Niramaya Hospitals in Mumbai).