The Acting Chief Medical Officer revealed news of the cluster as fears rise about the increasing number of Covid cases in the City and county.
47 new cases were confirmed in Cork last night, bringing the number of cases in the county this week to 228.
NPHET say they are concerned by the rising number of hospital admissions and deaths, with 32 people dying from Covid-19 in September alone.
4 new deaths were confirmed yesterday, alongside 442 new cases.
Member of NPHET and Cork GP Dr Mary Favier says the new restriction reflects the concern of public health officials.
