NPHET recommends no more than 2 households should meet at any given time.
People should only have a maximum of 6 visitors from 1 other household to their home.
It comes after four more people with the virus lost their lives while 442 tested positive.
Dr Nuala O'Connor, lead advisor on Covid-19 at the Irish College of GPs, says we can expect far more pressure on our hospitals in the weeks ahead.