Trinity College Dublin has written to staff and students to inform them that a case of Covid-19 is connected with the campus.
This is one of 13 coronavirus cases confirmed in Ireland.
TCD said a section of its Dublin city centre campus is closed as a precautionary measure, but the rest of the university is open and operating as normal.
However, it said the situation is fluid and it advised its 18,000 students and 3,000 staff to keep up to date with communications from Trinity and advice from the Health Service Executive.
It said the HSE will trace anyone who has been in contact with the infected individual to ensure they receive any necessary medical attention.
TCD said it received the information late last night and that it is taking all appropriate steps to contain any further spread of the virus to protect the welfare of staff and students.
It also said it is working closely with the authorities to ensure the individual involved receives the best possible care.
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