A two-hour limit for meetings will remain in place, even if all the Covid-19 restrictions are lifted by September.
The Houses of the Oireachtas and the courts are also limiting sittings to under two hours, following HSE guidance. Employers are also being urged to still restrict staff numbers in the workplace.
Meanwhile, a top US scientist says governments should not count on a successful vaccine against Covid-19 being developed anytime soon.
William Haseltine, a groundbreaking researcher of cancer and HIV, says it may only be possible to manage outbreaks in the future.
Even without an effective treatment or vaccine, he says the virus can be controlled by identifying infections, finding people who have been exposed and isolating them.