Hyundai Engineering and Construction said this week that 23 South Korean workers and 145 other workers had tested positive at the site of a €1.5bn petrochemical complex under construction near the town of Police in northwestern Poland.
The company said one South Korean employee at the "Polimery Police" site was found to have contracted the virus on 15 October, prompting the testing of all 1,300 workers.
A Hyundai official said the company had placed the confirmed patients in isolation according to the guidelines of local health authorities.
The plant is being developed by PDH Polska, a special purpose vehicle owned by Polish chemical group Azoty.
Hyundai signed a lump sum turnkey contract to build the complex in May last year.
Image: Â©GCR, illustration by Denis Carrier