In particular, health officials have concerns about the opening of the hospitality sector
Restaurants and pubs that serve food are due to open at some point in December - but NPHET has raised issues with this in a letter to the Health Minister.
The caution from NPHET was expected by the government.
In the Dáil, Tánaiste Leo Varadkar has said he doesn't fully accept the argument that wet-pubs should be allowed to open to avoid more house parties from happening: