Two cases of legionella have been reported, the government said in a statement issued this afternoon.
In one case the disease was contracted from a private establishment, while in the other the patient contracted the illness from a home in a village different to that of the establishment.
A number of test results relating to these cases are still pending and the Health Department said it was following the cases closely.
Legionella is normally linked to poorly maintained air-conditioning and water systems and humidifiers.