A large chunk of Omicron cases in India as the country faces a third wave of the COVID-19 pandemic have been reported from big cities, the head of the country's vaccine task force told NDTV today. 23 resident doctors of a top hospital in Delhi have tested positive for COVID-19 over the span of a week. Delhi witnessed yet another worrying surge in Covid cases - believed to be driven by the new Omicron variant - with 4,099 infections recorded in the last 24 hours.