Minister for Health Stephen Donnelly has said the Government "must be open" to reviewing the prioritisation list for Covid vaccines.
He told the Dáil that he was "sympathetic" to the concerns raised by people with cystic fibrosis and other underlying conditions.
He was responding to questions from Fine Gael's Colm Burke who said consideration should be given to around 2,000 people receiving dialysis who are down the priority list.
Mr Donnelly said a similar question is being raised about people with other conditions that make them very vulnerable to the virus.