Published Sunday, 31 May 2009
The latest patient to test positive for the virus is a man from the south of the country who had recently returned from New York.
Dr Tony Holohan, Chief Medical Officer of the Department of Health and Children said the man was being treated at home and all necessary public health protection measures were being taken.
The case is unconnected with the three previous cases of Influenza Type A (H1N1) confirmed in Ireland, Dr Holohan said.
The Department said additional cases are expected.
In order to minimise numbers, people were again warned to take personal protection measures.
Those include using and disposing of tissues and thoroughly washing hands.
The Department also asked people who have visited an affected area and become ill with flu-like symptoms to contact their GP by telephone and not turn up at a surgery or A&E unit.