The local authority say they have advised residents of Esker Hills in Portlaoise of the outbreak.
Laois County Council are continuing their work to control an ongoing rat infestation at a housing estate.
The local authority say they have advised residents of Esker Hills in Portlaoise of the outbreak at a lake to the front of the estate.
They are urging them not to touch any equipment that have been set up to catch them, and are remindng residents it can happen when wildlife in around the area are fed.
Aine O'Neill lives in the estate and says it's been notable to residents:
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