The Department of Health has been notified of one new death related to Covid-19 and 85 additional confirmed cases.
There have now been a total of 1,763 deaths in Ireland and 26,027 confirmed cases.
53 of the infections reported today are among men, with 32 among women.
68% of the cases are under 45 years of age. 39% are associated with close contacts of a confirmed case.
Acting Chief Medical Officer Dr Ronan Glynn said that at least 18 of the cases reported today are associated with an outbreak at a factory in Co Kildare. The factory is closed and outbreak control teams are in place.
He said a number of the workers are living in Direction Provision centres. All of the workers have been tested.
In a statement tonight, Irish Dog Foods said it has been informed that a number of its employees in Naas have tested positive for Covid-19.
It said: "The individuals involved are now self-isolating and we remain in contact with them to ensure they have the support they require.
"We are working closely with the HSE and will continue to follow their advice at all times in how we manage this issue.
"In consultation with the HSE, we have closed the facility in question to enable a deep cleaning to be carried out.
"Staff well-being and safety is paramount for our company and we have a full range of measures in place including appropriate PPE, enhanced cleaning and hygiene regimes, social distancing measures, temperature screening and regular staff health and hygiene training and communications to help combat the virus."
Dr Glynn said a small number of cases reported today are associated with the construction industry, and there are four clusters in private households and extended families.
Dr Glynn said: "Today's figures demonstrate how quickly Covid-19 can re-emerge in our country" and "we are now at a crucial point in our response".
"Over the coming days it is vital that everyone continues to avoid large crowds, physically distance, wear face coverings where appropriate and wash hands regularly.
"Covid-19 is extremely infectious and no one is immune".
He said: "Today may be a blip associated with a number of specific clusters, or it may be a sign of something more significant" adding that "as we go into a bank holiday weekend, it's really important that people remember the basic messages."
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Professor Philip Nolan, chair of the National Public Health Emergency Team Irish Epidemiological Modelling Advisory Group, said that for the last three weeks - up until yesterday - Ireland has seen a stable number of cases per day, with an average of around 20.
With the new cases confirmed today, that average has risen to the low 30s, he added.
"Today may be a blip associated with a number of specific clusters, or it may be a sign of something more significant ... whether today had happened or not, as we go into a bank holiday weekend, it's really important that people remember the basic messages." Dr @ronan_glynn says pic.twitter.com/FbMhLTBOeX— RTÉ News (@rtenews) July 30, 2020
26 of the cases are in Kildare, 18 in Dublin, 11 in Clare, nine in Laois, seven in Limerick and four in Meath. The remainder are spread across seven other counties.
A total of 476 clusters have now been identified in residential care facilities, of which 270 have been in nursing homes.
Clusters are associated with 7,500 confirmed cases across all residential care facilities, of which 5,871 have been in nursing homes.
1,113 deaths are associated with outbreaks in residential care facilities.
Dr Glynn said NPHET would not be making any decision about moving to Phase Four of the roadmap for reopening the country on 10 August until it sees "how this plays out in terms of the numbers".
"Next week is very far away at this point ... we'll be making no decisions about moving to phase four or other measures until we see how this plays out in terms of the numbers." says Acting Chief Medical Officer Dr @ronan_glynn | https://t.co/yro2bXPnFk pic.twitter.com/7LBgjn4lzA— RTÉ News (@rtenews) July 30, 2020
Asked what he would say to pub owners wondering if their business will reopen on Monday week, Dr Glynn said he was "very sorry" for the position they are in "but our focus here has to be on public health".
He said the focus has to be on ensuring that as few people as possible are infected with coronavirus and Ireland does not end up in a situation similar to the one that occurred in March and April.
Dr Glynn said the concentration needed to be on the reopening of schools and maintaining health services to get them "back up and running to an event greater extent than they are at the moment".
"This isn't going away. It hasn't gone. We've seen what will happen, by looking at what's happened in other countries, if we relax. Ironically the lower the numbers get, the more we need to work at this to keep them there, keep them suppressed," Acting CMO Dr @ronan_glynn says pic.twitter.com/6wbQ0R4o4b— RTÉ News (@rtenews) July 30, 2020
Earlier, the CEO of the Health Service Executive said the number of people in hospital with Covid-19 is at six, down from a peak of 879.
Four of the patients are in intensive care units, which is down from a peak of 160.
Paul Reid urged people to "keep fighting hard against this virus".
#COVID19. Some really good news. Overnight, we are now down to 6 positive cases in hospital (from 879 peak) and 4 in ICU (160 peak). Just 6 hospitals with one case each. We all dont want this trend to go back up. Let's all keep fighting hard against this virus. @HSELive— Paul Reid (@paulreiddublin) July 30, 2020
Mr Reid said there are now just six hospitals in the country with one case each.
The Department of Health in Northern Ireland has reported a 17th consecutive day without further deaths from Covid-19. The official death toll remains at 556.
Eight new cases of the disease have been confirmed, bringing the total number of cases to 5,938.
The department said the current estimate of the reproductive rate of the virus in Northern Ireland is between 0.5 and 1.
It comes as Northern Ireland's Covid-19 contact-tracing mobile phone app was launched.
The Stop Covid NI app is aimed at interrupting the spread of coronavirus by finding those most at risk of catching it.
The software's use will be voluntary and identifiable information will not be stored to comply with data protection regulations, an official told the Stormont Assembly's health committee.
The operating system is designed by Google and Apple and its use will require Bluetooth to remain on.
For Covid-19, the World Health Organization says that data to date suggests that 80% of infections are mild or asymptomatic; 15% are severe infection, requiring oxygen and 5% are critical, requiring ventilation.
Generally, you need to be 15 minutes or more in the vicinity of an infected person and within two metres of them, to be considered at-risk, or a close contact.
"Young people are not invincible," WHO chief Tedros Adhanom Ghebreyesus told a virtual news conference in Geneva.