The Department of Health has been notified of 311 cases of Covid-19 and 30 virus-related deaths.

12 of the deaths happened this month, with 13 taking place in February, and four in January. One death remains under review.

There have now been 4,452 Covid-related deaths in Ireland since the pandemic began here over a year ago.

The median age of new cases is 34, and 64% of cases reported today are under 45.

135 of the cases are in Dublin, with 29 in Kildare, 21 in Cork, 18 in Limerick and 14 in Louth. The remaining 94 cases are spread across 16 other counties.

There have been no new cases reported in Donegal, Monaghan, Cavan, Sligo and Leitrim.

There are now 397 people with Covid-19 being treated in hospitals around the country. The number of people in intensive care is 95, down eight from yesterday evening.

The Department of Health has said that as of Saturday 6 March 523,069 doses of Covid-19 vaccine have been administered in Ireland, with 9,747 doses administered on Saturday.

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Meanwhile, Taoiseach Micheál Martin has said he is disappointed "with some of the issues" with vaccine supply in the first three months of this year.

It follows reports this morning of a significant shortfall in the expected supply of vaccines to Ireland by the end of March.

Elsewhere, Johnson & Johnson has told the European Union it is facing supply issues that may complicate plans to deliver 55 million doses of its Covid-19 vaccine to the bloc in the second quarter of the year, an EU official told Reuters.

Any delay would be a further blow to EU's vaccination plans, which have been hampered by bumpy supplies from other vaccine makers and a slow roll-out of shots in many member states.

In Northern Ireland, the Health Minister said the vaccination roll-out is likely to be significantly ramped up with one of the largest deliveries of the AstraZeneca jab to Northern Ireland expected this week.

Speaking during a visit to a vaccination centre at the Ulster Hospital in Dundonald, Robin Swann said some of the regional vaccination centres are being moved from Pfizer to AstraZeneca due to the imminent delivery.