More than 1,500 cases of the Omicron variant of coronavirus have been detected in India, as of Sunday. The fast-spreading variant has reached 23 states of the country, the government said on Saturday. Meanwhile, a total of 27,553 new Covid-19 cases and 284 deaths were reported in India on Sunday. The Centre has issued an advisory to states to check the spread of Covid-19 in the country. The states have been advised to initiate the process of setting up temporary hospitals and control rooms to monitor cases. Follow IndiaToday.in for LIVE updates on Covid-19 in India and the world.