The calculation is based on around 700 primary schools and 500 secondary schools reporting positive cases, which public health officials say the vast majority relate to community transmission and not infections picked up in schools.
Each primary school case has on average 15 close contacts, while in secondary schools the figure is lower at around 4.
For more details please see: https://www.rte.ie/news/coronavirus/2021/0907/1245142-covid-latest/
