Last night saw the highest number of confirmed cases since mid-May.
The Chief Medical Officer has expressed a concern at the levels of Covid-19 in Louth, Donegal and Waterford.
Despite a focus on Dublin, Dr. Ronan Glynn says people in these counties in particular need to do all they can to break the chains of transmission over the next 7 days.
396 new cases were confirmed around the country yesterday - the highest daily figure since mid-May.
Of those cases 19 are in Donegal, 7 in Louth and 6 in Waterford.
Acting Chief Medical Officer Dr Ronan Glynn gave a special warning to people living in these three counties as case numbers continue to "rise fast".
He wrote on Twitter: "There has very understandably been a particular focus on Dublin over the past few days.
"However, most other counties are also seeing increasing numbers of cases of COVID-19. Three in particular are already high and continuing to rise fast."
He also presented the 14-day incidence rates for these counties:
Louth
14 day incidence 53/100,000 last Sunday; 102/100,000 this Sunday
131 cases in last fortnight
Donegal
26/100,000 last Sunday; 84/100,000 this Sunday
133 cases in last fortnight
Waterford
55/100,000 last Sunday; 89/100,000 this Sunday
103 cases in last fortnight
There has very understandably been a particular focus on Dublin over the past few days.
However, most other counties are also seeing increasing numbers of cases of #COVID19. Three in particular are already high and continuing to rise fast; 1/n
— Dr Ronan Glynn (@ronan_glynn) September 20, 2020
Immunology professor, Dr. Rachel McLoughlin from Trinity College Dublin, says people need to act now to slow the spread of the virus.
''It's difficult for everybody, some sectors in society have obviously been impacted very severely'', she said.
''But it has touched every single person, every single family in this country.
''At the moment if we can act now, if we can restrict our movements, if we can keep our distance hopefully we can priortise keeping our schools open and keeping our health services open''.