The information was given by Nguyen Huynh Manh, office manager of the municipal Department of Health at a press conference held on Thursday on the Covid-19 pandemic situation.
According to Mai, the city had recorded 12 Omicron patients who were all from abroad and had been quarantined on their arrival to HCM City.
Among those, only two had light symptoms such as a cough and runny nose, while the others were asymptomatic.
Meanwhile, more than 2,000 people who shared the same flights with the patients tested negative for Omicron Mai added.
HCM City has seen positive signs in the fight against the pandemic, with a drop in the number of daily cases to under 1,000 and deaths falling to under 50, reported the local Steering Committee for Pandemic Prevention and Control.
The number of new Covid-19 patients hospitalised every day has also been lower than those being discharged from hospital.
On January 12, the city recorded 275 new Covid-19 hospitalised cases, while the number of discharged patients reached 292.
Around 7.2 million people have been fully vaccinated against Covid-19.