The government on Friday reported 81 new Covid-19 cases - 37 local infections, 35 migrant workers and nine quarantined arrivals - raising the total to 5,910.

The Centre for Covid-19 Situation Administration said  26 of the 37 local infection cases were linked to the outbreak in Samut Sakhon province. The other 11 were still under investigation.

The local infections included vendors, government officials, seafood transport workers and bank employees. Most showed symptoms of the disease, he said.

So far, the outbreak that started at the Central Shrimp Market of Samut Sakhon province had spread to 31 provinces.

There have been 8,810 people tested in Samut Sakhon. Of those tested, 1,308 (15%) were positive. Health officials planned to test about 10,000 people in Samut Sakhon to ensure Covid-19 control, the CCSA said.

Of the 1,308 infected migrant workers, about 500 were admitted to hospitals, with a few cases of serious illness. The others were quarantined only.

The nine quarantined arrival cases came from the United States, Russia, Switzerland, Germany, Myanmar and the United Arab Emirates.

Of the total 5,910 local cases, 4,130 had recovered, including 21 discharged over the past 24 hours, and 1,713 were in hospitals. The death toll remained at 60.

Since the pandemic started early this year, local Covid-19 cases have consisted of 3,967 local infections, 1,943 arrivals and 1,308 migrant workers, the CCSA said.