Coronavirus news updates: The defence ministry carried out a massive contact-tracing exercise after Defence Secretary Ajay Kumar has tested positive for COVID-19 on Wednesday. At least 35 officials working at the defence ministry’s headquarters in South Block in the Raisina Hills have been sent on home quarantine. This came on a day when Delhi saw its highest spike with 1,513 new cases of the novel coronavirus in a single day. While the Delhi tally on Wednesday night crossed 23,000, the total cases in India reached 2.07 lakh. Globally, 3.85 fatalities due to coronavirus have been reported so far, while the number of confirmed Covid-19 cases stands at 64.29 lakh.