Gandhinagar, Gujarat on Saturday registered first Omicron case after a Zimbabwe resident, who arrived in Jamnagar, was found infected with Covid-19's new mutant.

The Nodal officer for Corona, GG Hospital, Jamnagar, Dr S. Chatterjee told IANS: "Samples of the 72-year-old Zimbabwe resident sent to Biotechnological Research Laboratory in Ahmedabad tested positive for Omicron. The patient is in isolation since his admission. We had traced all his close contacts, screened them and they tested negative. But we will conduct the test of all his contacts once again."

As he had returned from Zimbabwe, an African nation and one of the "at risk" countries identified by the authorities, his samples were sent to Ahmedabad for genome sequencing, which tested positive.

The man is believed to be a native of Jamnagar who has been living in Zimbabwe for many years.

He arrived on November 28 to meet his father-in-law. After he got a fever, his doctor advised him to get an RT-PCR test done. As mandated, the private laboratory informed the health authorities that his report was Covid-19 positive.