Clusters of cases of the coronavirus, where the infection is likely to be connected to a group of people, are appearing in hospitals and nursing homes.
The first broad analysis of the impact of the virus shows how it has been picked up in six hospitals around the country so far where a cluster is being investigated.
It is unclear if patients as well as health workers were involved.
This raises concern about the spread of the virus and hospital infection controls, even at this relatively early stage when the volume of infected patients is still manageable.
The analysis from the Health Protection Surveillance Centre also showed 37 outbreaks, and clusters were reported up to Monday night last when 836 cases of the virus were confirmed nationally since the first infection was detected on March 1.
Nursing homes in the east of the country have seen four clusters and there were 11 involving people who had been abroad.
The power of the virus to circulate within a home is seen in seven private houses.
Another four outbreaks happened in the workplace.
There is a clear signal about the need for physical distancing of two metres in the figures, revealing that five clusters happened among extended family.
Its victims so far have spanned the generations in the Republic.
Among those infected have been a baby under one year and a person aged 95.
The analysis for the first time shows all the countries where people who returned here with the virus picked it up abroad.
They include 60 people who were in Italy, 39 who came back from the UK, 37 in Austria and 16 in Spain.
Other countries where people diagnosed here had been to included the United States, France, Switzerland and the Philippines.
However Ireland, rather than abroad, is now the main location for picking up the infection for positive cases.
And 543 people who caught it up to Tuesday contracted it here.
The east of the country has seen the highest rate of infection, followed by the south. So far the lowest rate is in the south-east and north-east.
Dublin had the most confirmed cases at 471.
Monaghan and Wexford have suffered the least so far.
More men than women have caught the virus.
Among those who ended up in intensive care there were eight over-65s.
They made up the largest group who were critically ill in hospital, and up to Monday night they accounted for eight patients who were admitted to intensive care.
However, the picture also reveals how the virus can cause severe illness in younger age groups.
There were six patients aged between 45-54 in intensive care.
And another six between 55-64.
One child aged between 5-14 years has also ended up in intensive care.
Four patients in their twenties and thirties were also critical with the virus.
Overall, 239 were hospitalised as of Monday but that figure has risen since.
Nine people have died from the virus.
The figures reveal the average age for those who get the virus here is 44.
The picture that has emerged is of a virus which is tightening its grip, weaving its way into areas like nursing homes where residents could be particularly vulnerable to complications.
The number of new cases of the virus has jumped significantly since this analysis was carried out, showing the speed of its spread here.
The pattern reinforces the need for the population to follow the rules on physical distance, keeping two metres from people outside their household when shopping, walking or at work.
There is also a clear message about how it is affecting different age groups and leaving younger people critically ill.
Older age groups are still more likely to be hospitalised.
There is also no room for complacency even within a household.
The personnel of the Defence Forces are justly proud of their record of steadfast loyalty and service to the State and its citizens, even though that same dedicated professionalism and patriotism has largely gone unrequited.
Many of us in general practice view the front line of the Covid-19 pandemic as being in households, workplaces, public spaces and community clinics, particularly GP clinics and GP co-operatives.