A 23-year-old Tanzanian national, who had tested positive for COVID-19 at Rajkot on December 15, and a 39-year-old businesswoman in Surat, who recently returned from Dubai have also been found infected with the new variant of the virus, officials said, adding that with these cases, the overall Omicron case count in the state has risen to eleven.The Tanzania national had arrived at Ahmedabad via Zanzibar and Dar-es-Salaam, had tested negative for the virus in the RT-PCR test carried out at the airport.