Another 1,247 people have been diagnosed with Covid-19 in Ireland.
Tragically, 15 further people have lost their lives after fighting the deadly virus.
This brings the death toll in Ireland to 3,307, while the total number of cases confirmed here has jumped to 196,547.
Of those diagnosed, 659 were women and 579 were men, while the average age was 39.
Dublin again had the most number of new infections with 430, followed by Wexford (97), Cork (87), Limerick (84) and Galway (76).
There are currently 1,516 Covid patients being treated at hospitals nationwide, 211 of which are in intensive care.
The latest figures were released in a statement by the National Public Health Emergency Team on Sunday evening.
The news comes just hours after Dr Tony Holohan again pleaded with the public to adhere to health rules.
The Chief Medical Officer said that the fact Ireland recorded more infections in January than all of 2020 shows just how quickly the virus can spread.
He explained: “We have experienced over 1,000 deaths and more than 100,000 cases in January 2021. We have reported more cases in one month than we experienced throughout 2020.
"This shows just how quickly this disease can spread and how much it can impact public health.
“The efforts by all of the population in following the basic public health advice has seen us reduce the incidence of the disease very rapidly compared to most countries in Europe.
“Despite the recent, significant decrease in cases, there remains a level of infection in the population which is double that seen at the peak of incidence last October.
"The next few weeks need to see us maintain compliance with all of the measures that are in place so that we can get to levels of the disease that are as low as possible.”
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