The level 3 restrictions in place in Dublin for the next 3 weeks
This means many firms have had to close, unless they have outdoor seating or do takeaway.
Over 2 thousand outbreaks of the virus so far have been linked to private houses, with very few traced back to restaurants and pubs.
But Professor Philip Nolan, who chairs NPHET's modelling advisory group, says those settings are where the problem is:
