Chief Medical Officer Dr Tony Holohan has warned young people after a "worrying increase" in Covid-19 cases.
Health officials confirmed this evening that 600 further people have tested positive for the deadly virus, with 64 patients in hospital.
And despite the rapid approach to another major vaccination milestone, Dr Holohan has registered his concern about those aged between 16 and 29.
He said: “We have come so far, and I know it is hard to continue to adhere to the public health measures, but our continued individual effort is needed to minimise the risk of the Delta variant, a highly transmissible strain that poses a significant threat to the unvaccinated or partially vaccinated.
“We are currently experiencing a worrying increase in incidence in daily case numbers, particularly in the 16-29 age group. If you are unvaccinated or partially vaccinated, you need to maintain a high degree of caution in your activities this summer. It is essential for you to avoid crowds, carefully manage your contacts, wear your mask, keep a safe distance from others and take the vaccine when it is offered."
However Dr Holohan did note that there was "great hope" for the future in Ireland, ahead of a major decision around the reopening of indoor dining.
He added: “Tomorrow marks 500 days since the first case of COVID-19 was reported in Ireland. We have come a long way together on this difficult journey and sacrificed much in our collective effort to limit the transmission of this disease.
“As we approach our 5 millionth dose of the COVID-19 vaccine, we have great hope for our future.
"Our vaccination programme is working, the levels of protection in the community against the virus are increasing daily and those who are fully vaccinated should feel safe to increase their social contacts and to take advantage of new freedoms, while continuing to make positive public health choices in their daily routine."
