Published Monday, 25 May 2009
The Irish Department of Health said the patient is a woman living in the east of the country who recently travelled from New York.
"She remains at home where she is receiving appropriate treatment and is clinically well," said a spokeswoman.
The first case of swine flu in Ireland was confirmed on May 2.
Chief Medical Officer Dr Tony Holohan said on Monday: "Laboratory test results have today confirmed a second case of Influenza Type A (H1N1) in Ireland.
The Patient remains at home where she is receiving appropriate treatment and is clinically well.
People who have been in contact with her are being identified in accordance with public health guidelines."
The official added that the latest case did not come as a surprise.
"We have expected further cases and indeed, still do," he said.
"Both the Department of Health and the Health Service Executive had planned for this eventuality and continue preparations in anticipation of further cases."
Last week the Irish Government lifted a travel ban on non-essential travel to Mexico as officials believed the risk of infection had receded.
Information leaflets on swine flu were distributed to two million homes in recent days.
The HSE is currently involved in talks with pharmaceutical firms to purchase vaccines for the virus.