Thailand's Center for COVID-19 Situation Administration (CCSA) said on Thursday that it has changed its COVID-19 testing procedure for arrivals from twice to three times during the quarantine period.

The CCSA also said it will be finalizing its judgment soon whether mandatory quarantine can be shortened from 14 to 10 days.

Before, each arrival was tested twice during the 14-day quarantine, first three-five days after arrival, and then again on days 11-13, said CCSA spokesman Taweesin Visanuyothin.

"But now, each arrival is now tested three times, on day 0-1, day 9-10 and day 13-14. The changed testing process would continue until Jan. 15," Taweesin said.

"Also in a bid to attract foreign tourists, CCSA will make a final decision soon of whether quarantine could be reduced to 10 days," Taweesin said.

However, Deputy Prime Minister and Public Health Minister Anutin Charnvirakul said on Thursday that should the CCSA decide to shorten quarantine days, this procedure will only apply to visitors from low-risk countries.