A total of 819 cases of COVID-19 sub-variant JN.1 were reported from 12 states till Monday, official sources said.
They said 250 cases were reported from Maharashtra, 199 from Karnataka, 148 from Kerala, 49 from Goa, 36 from Gujarat, 30 each from Andhra Pradesh and Rajasthan, 26 each from Tamil Nadu and Telangana, 21 from Delhi, three from Odisha and one from Haryana.
Even though the number of JN.1 cases is rising, there is no cause of immediate concern as the majority of those infected are opting for home-based treatment, indicating a mild illness, officials said.
The Centre has asked the states and Union territories to maintain a constant vigil amid an uptick in the number of Covid cases and the detection of the JN.1 sub-variant of the virus in the country.
The states have been urged to ensure effective compliance of the detailed operational guidelines for the revised Covid surveillance strategy shared with them by the Union Ministry of Health and Family Welfare.
The states have also been asked to monitor and regularly report district-wise cases of Influenza-like Illness (ILI) and Severe Acute Respiratory Illness (SARI) from all health facilities for an early detection of a rising trend of cases.
The World Health Organisation (WHO) has classified JN.1 as a separate "variant of interest" given its rapidly-increasing spread, but said it poses a "low" global public health risk.
The JN.1 sub-variant of the coronavirus was previously classified as a variant of interest (VOI) as part of the BA.2.86 sub-lineages, the parent lineage that is classified as a VOI, the world body said.
