<p>We identified 18 Covid-19 cases(15 by RT-PCR and 3 by RAT) among 37 workers residing at State guest house A. Overall attack rate was 59%. The median age was 32 years(range 22-57), 16(89%)were policemen, 17(94%) were male. Four(22%) were symptomatic. None of the cases were immunized with any Covid-19 vaccine. A total of 16(89%) cases have travelled from other state to New Delhi in the last 15 days. None of them tested at border testing facility. Same 16(89%) cases stayed at basement police barrack situated at the state guest house. All of them were exercising Covid-19 appropriate behavior.</p>