It comes as the incidence rate of the virus nationally has increased again.
Health officials will discuss enhanced contact tracing this week to try and work out where people picked up Covid 19.
The current contact tracing system means if you test positive for Covid, you'll get a call asking where you've been in the two days before you got symptoms. If health officials can't pinpoint what setting the case is linked to, it's recorded as community transmission.
That accounted for 60 of yesterday's 430 new infections, the highest daily increase since the end of April.
This week, NPHET will consider enhanced retrospective contact tracing to help identify the activities and locations that are riskiest for the spread of the virus. This comes as the 14-day incidence for Covid-19 has risen again - from 80 to 84 cases per 100 thousand.
In the two counties under level 3 restrictions, Donegal has risen from 178 to 185, and Dublin from 148 to 152. In the other areas being watched by NPHET, Waterford's gone from 67 to 86 ; Galway from 45 to 54 ; Louth from 94 to 104 and Cork from 52 to 62.
