CCSA spokesperson Dr Taweesin Visanuyothin emphasised that the global situation had aggravated significantly since last month but added that Thailand was not experiencing a second wave as the numbers were still low.
Most of the new cases are Thais who had returned from abroad.
On November 20, a British man, 71, travelled from the United States.
On November 28, a Thai woman, 46, returned from Belgium, a Thai woman, 45, returned from Ukraine, two Thai boys aged 9 and 10 flew back from Saudi Arabia, and a Thai female student, 16, returned from Sweden.
On November 29, a Thai woman, 43, returned from Japan.
On November 30, a Thai woman, 31, travelled back from the United Kingdom.
On December 3, a Thai woman, 38, returned from Qatar.
Three people travelled from Myanmar -- a Burmese man, 24, entered legally on November 24, while a Thai man, 70, who had stayed in Myawaddy for the last 2-3 months, and a Thai woman, 26, who was linked to a male patient, 30, reported on Saturday, did not go through the regulated screening process or the mandatory quarantine. The woman had worked in an entertainment complex in Tachilek district, in Myanmar. Five of her high-risk contacts and 10 low-risk contacts had been reached for quarantine and tested.
Two women, 26, were found positive in Bangkok and recognised as local transmissions. One had a history of travel to Mae Sai district in Chiang Rai province, from November 27-29, while another is a health officer who has duty at a Bangkok alternative stapte quarantine hotel.
Meanwhile, five patients have recovered and been discharged.
The total number of confirmed cases in Thailand increased to 4,086 (1,104 in state quarantine), 173 are in hospital, 3,853 have recovered and been discharged and 60 have died.
According to Worldometer, as of 10am on Sunday, the total number of confirmed cases since the outbreak had reached 66.85 million (up by 620,775), 46.24 million have recovered, 19.07 million are active cases (106,022 in severe condition) and 1.53 million have died (up by 10,096).
Thailand ranks 151 for most cases in the world, while the US has the most number with 14.98 million, followed by India 9.64 million, Brazil 6.57 million, Russia 2.43 million and France 2.28 million.
Dr Sophon Iamsirithaworn, general communicable diseases director at the Department of Disease Control, said 23 cases were linked with Myanmar's Tachilek town -- Chiang Rai (11), Chiang Mai (5), Bangkok (3), Ratchaburi (1), Phichit (1), Singhaburi (1), and Phayao (1).
He revealed that 227 close contacts of the Singburi case had all tested negative and were in quarantine to ensure health safety.
As for farm festival participants in Chiang Rai, more than 2,000 people had been checked and found negative so far.
Dr Taweesin asked cooperation from the public by wearing face masks and checking-in with the ThaiChana app as the recent domestic cases took about 2-3 days to conclude and track all close contacts. If ThaiChana is fully utilised, it would help stop Thailand from entering the second wave since health officers can easily and quickly contain all risks.