Fianna Fáil has criticised the pace of delivery of primary care centres.

The party's health spokesperson, Billy Kelleher, said that just one of 35 centres promised in 2012 is operational - in Kells, Co Meath.

He said it was critical that the centres are opened and that the pace of delivery has been disappointing.

In a written answer to a Dáil question from Mr Kelleher, Minister for Health Simon Harris said that 57 primary care centres have been opened since 2011.

A further 12 are due to open this year, or early 2018.

Of the 35 locations announced in July 2012, one is open, six more are due to open this year and ten in 2018.

Some of the projects are direct build, operational lease, or public private partnerships.

Mr Harris said that the mechanism and timescale for delivery of the centres is dependent on a number of factors, some outside the control of the Health Service Executive.

He said all potential primary care infrastructure is subject to suitable locations being offered, provided or available, to a successful planning process and a GP commitment to sharing accommodation and delivering services with HSE staff.

The operational lease system is also subject to market pressures, including developers' access to adequate financing.