Ms Orla Hegarty:

To finish Deputy Durkan's question first, CO2 is measured at parts per million and 800 is considered to be what we are aiming for.

To comment on schools, one in four of our population goes to school every morning. They will not be vaccinated for the autumn. When people speak about a return to normality, one quarter of the population will not have protection and will be vulnerable for the rest of this year. In my view, whatever money needs to be spent on schools is money well spent because it will keep the rest of society open, as well as keeping education and the economy open. It is critically important that there be a plan for schools over the summer in order that they can operate comfortably and safely for next winter. The discussion about population protection with vaccination rates at 80% refers to 80% of adults. That is, at best, 60% of the population. Regardless of the vaccination programme over the next number of months, a prevention plan in ventilation is critically needed. Vaccination on its own will not allow things to reopen; it is mathematically not possible.

On BER certificates, I completely concur with Mr. Jones on the regulations in place now. However there is a very weak link in terms of compliance and enforcement because the sector is still left to regulate itself. This is too important to be left to the sector.