Q&A: How does Nphet's modelling work and how accurate is it?

Chief Medical Officer Dr Tony Holohan said that advice was given to Government based on Nphet modelling projects which indicate there could be more than 200,000 cases of the virus next month. Picture: Colin Keegan, Collins Dublin

A host of new restrictions were announced on Tuesday in response to the high number of Covid-19 cases being reported.

Under the measures announced: