Louise O'Reilly (Dublin Fingal, Sinn Fein) | Oireachtas source

When Mr. Ryan refers to the forensic mental health services, it sounds as if there are multiple locations but that is clearly not the case. On what date were visits to the Central Mental Hospital restricted ? I imagine Usher's Island would have been closed in the early stages and then the visitor restrictions relating to the Central Mental Hospital would have kicked in. What date was that?