India's health ministry is on alert following a surge of Covid cases in neighbouring China.
The government has instructed states to ensure genome sequencing of all positive cases in the country.
It has also asked state governments to step up efforts to curb any possible spread during the Christmas and New Year festivities.
India witnessed two deadly waves of Covid in 2020 and 2021, but has seen low infection levels this year.
According to government data, the country reports roughly 1,200 Covid cases every week. Over 2.2 billion Covid vaccine doses have been administered so far.
On Tuesday, the federal government asked states to send Covid samples of all positive patients to labs runs by INSACOG, a forum under the health ministry which studies and monitors various strains of Covid in India.