Four medical personnel infected at quarantine facilities in Bangkok are among 19 new Covid-19 cases reported on Tuesday, raising the total to 4,126.

The 15 others are arrivals from eight countries.

Seven cases were returnees  from Myanmar, two from the United States and one each from Bahrain, Bulgaria, Denmark, Morocco, Turkey and the United Kingdom.

The four locally infected cases are nurses and colleagues aged 25-40 who worked at alternative state quarantine facilities and hospitals in Bangkok. They tested positive on Dec 4 and 5. People in close contact with them tested negative.

Three are women who had a fever, runny nose and headaches. The other is a man and was asymptomatic.

From Myanmar, six cases are Thai women, aged 24-37, who arrived on Dec 2 and 5 and were quarantined in Chiang Rai province.

They had worked at entertainment places.

The other case from Myanmar is a Thai housewife, 21, who sneaked back to Chiang Rai on Nov 29 and tested positive on Dec 5, but was asymptomatic.

Of the 4,126 total cases in the country, 3,874 (93.89%) recovered including six discharged over the past 24 hours and 192 were at hospitals. The death toll remained unchanged at 60.