The Department of Health has been notified of 892 new cases of Covid-19.

There are 333 people in hospital with the virus, up 14 from yesterday.

Of those, 64 are in intensive care, up four.

It is the first time that the new daily case figure is below 1,000 since 15 July. The Department said the five-day moving average of daily cases is 1,172.

In a thread on Twitter this evening, NPHET's Professor Philip Nolan described the incidence of Covid-19 in Ireland as "stable but it is a complex picture".

"Incidence in children has fallen, so that it is now lower than it was in mid-August before schools opened," he said. "Incidence in adults may be trending upwards as we return to higher education and work."

Professor Nolan said that the incidence of the disease has fallen in children and adolescents, while incidence in children aged 5-12 is now lower than it was before schools opened.

"The number of children aged 5-12 years admitted to hospital is low, normally fewer than 3 per week, and this did not increase as schools reopened; it may have decreased, but we need to allow for delayed admissions," he said.

"A large force of infection built up amongst unvaccinated young adults with the arrival of the delta variant in July 2021. This was greatly suppressed by vaccination, and unaffected by the reopening of schools, but is sustaining a relatively high incidence overall."

He said that the number of people in hospital and ICU is "stable or increasing slowly". He said that this will continue to be monitored as this incidence is "higher overall than we would like, and represents a risk".

Professor Nolan added: "Vaccines work, and are doing the heavy lifting, but we need to continue basic measures, especially self-isolating if symptomatic. This is the most important measure, and even when you have no symptoms remember distance, masks, hand and respiratory hygiene and ventilation."

In Northern Ireland, a further three patients who tested positive for Covid-19 have died in the last 24 hours.

Another 1,080 cases of the virus were also notified by the Department of Health.

This morning, there were 338 Covid-positive patients in hospital, of whom 37 were in intensive care.

A total of 2,533,146 vaccines have been administered in total in the North.

The latest figures come after the European Medicines Agency said that booster doses of the Covid-19 vaccine from Pfizer may be considered at least six months after the second dose, for people aged 18 years and older.

It has evaluated data for the Pfizer vaccine in people with normal immune systems, showing a rise in antibody levels when a booster dose is given approximately six months after the second dose, in people from 18 to 55 years old.

The agency said that at national level, public health bodies may issue official recommendations on the use of booster doses, taking into account emerging effectiveness data and the limited safety data.

It said the risk of inflammatory heart conditions, or other very rare side effects after a booster is not known and is being carefully monitored.

The EMA said it is important to distinguish between the extra dose for people with weakened immune systems and booster doses for people with normal immune systems.

It has concluded that an extra dose of the Covid-19 vaccines from Pfizer and Moderna may be given to people with severely weakened immune systems, at least 28 days after their second dose.

The recommendation comes after studies showed that an extra dose of these vaccines increased the ability to produce antibodies against the virus that causes Covid-19 in organ transplant patients with weakened immune systems.

The EMA said that although there is no direct evidence that the ability to produce antibodies in these patients protected against Covid-19, it is expected that the extra dose would increase protection at least in some patients.

The agency said it will continue monitoring any data that emerges on its effectiveness.

The product information of both vaccines will be updated to include the latest recommendation.

As for all medicines, the EMA said it will continue to look at all data on the safety and effectiveness of the Covid-19 vaccines.