A building site in north Dublin has been temporarily closed after a sub-contractor there tested positive for COVID-19.
Construction company Sisk says it relates to the East Quad Project at the Grangegorman TU Dublin campus.
The firm became aware of the case on Wednesday afternoon.
Sisk says the site is undergoing a deep cleaning, including all the facilities on site and the site itself.
In a statement, the firm says: "The site has followed the specific advice of the HSE and the Health and Safety Authority at all times since the commencement of the COVID crisis.
"We are liaising with the HSE and the other relevant bodies in how we manage this particular incident.
"The health, safety and well-being of those who work with us and the communities in which we operate is our top priority.
"We are liaising directly with the staff member's employer, one of our sub-contractors, with regards to his welfare and well-being and we wish him a speedy recovery."
The project is a joint venture between John Sisk & Son and Spanish company FCC Construction.
Sisk/FCC is currently on site in two separate parts of the campus: the East Quad and Central Quad.
The case and subsequent site closure only relate to the East Quad.
This is the second incidence of COVID-19 on a Dublin construction site this week.
On Monday, a member of staff at a Townsend Street site in the city was confirmed to have the virus.
While further testing found a number of other cases on the John Paul Construction project.