It follows the latest advice from the ECDC.
The government is to consider reducing the length of time close contacts need to isolate.
It follows the latest advice from the European Centre for Disease Prevention and Control which allows for shorter isolation periods where there is extreme pressure on healthcare systems and society.
Close contacts of a confirmed case may need to isolate for as many as ten days even if they have no symptoms.
Professor of Immunology at Trinity College Dublin, Mullingar's Kingston Mills says antigen testing should be used if the isolation period is reduced.