Another seven quarantined arrivals - this time from Hungary, India, Kuwait, the Netherlands, the United Arab Emirates and the United States - have been found infected with novel coronavirus disease, raising total to 3,622.
The Centre for Covid-19 Situation Administration announced the new cases, detected in the previous 24 hours, on Thursday.
Two new cases are from Hungary, both are Thai - a 52-year-old man and a 45-year-old woman.
They arrived on Oct 1, were confirmed with Covid-19 on days 4 and 5 respectively after arrival, but showed no symptoms.
One case is from India, a Thai woman, 25, who returned on Sept 25 on the same flight as seven previously confirmed cases. Her infection was confirmed by the second test on day 11, when she had a cough.
The case from Kuwait is a Kuwaiti woman, 45, who had been confirmed with Covid-19 in July. She arrived on Monday.
A Thai woman, 34, who arrived from the Netherlands on Oct 1 was confirmed infected on day 4.
There is one new case from the UAE, a Thai woman aged 23. She arrived on Sept 25 on the same flight as three previously confirmed cases and her infection was confirmed by the second test on day 11.
The case from the US is an American man, 61, who arrived on Sept 19, was confirmed with the disease by the second test on day 12, while being asymptomatic.
Of the total of 3,622 cases, 3,439 (94.95%) have recovered including 48 discharged over the previous 24 hours, and 124 patients remained at hospitals, the CCSA said. The death toll was unchanged at 59.
