Samples from the quarantined people are being tested and others who had contact with them have been asked to self-quarantine.
After tracing the man's movements, the centre found 13 people who had close contact with him and identified two places he visited - the ABU restaurant on Bông Sao street in District 8 and the Su Su karaoke parlour on National Highway No.50 in District 8.
The district’s medical centre is also asking people who have visited these places to report themselves to the nearest medical stations.