A case of the Delta variant was confirmed following a gathering on June 11th.
A pop-up Covid testing centre is opening in Athlone today.
The HSE is inviting those who were socialising in the Westmeath town on the evening of Friday June 11th or since to attend.
Likewise those who think they might have been exposed to Covid 19 can visit the walk-in centre which is open from 10am to 4pm today, tomorrow and Saturday.
It's at the former St Aloysius School on Deerpark Road.