The government on Saturday reported 14 new coronavirus cases, all in quarantine, bringing the total to 3,216 cases since January.
The country has been free of local transmission for 47 consecutive days, said the Centre for Covid-19 Situation Administration.
Among the 14 new cases was a nine-year-old who travelled with her family.
A returnee, 42, arrived home from Bahrain on June 28 and was in quarantine in Chon Buri. She was asymptomatic and tested positive on July 9.
Another patient, 31, worked on a cruise ship in the United States.
The 12 others — 11 students, aged 19 to 31, and the nine-year-old girl — arrived home from Sudan on Friday and tested positive the next day, said the centre.
The new cases brought the total to 3,216, of whom 3,088 recovered, including one discharged on Saturday. Seventy patients remained in hospitals, while the death toll remained at 58.
