The Centre for Health Protection is investigating a case of Legionnaires' disease involving a 34-year-old man.
He fell ill on August 21 and sought medical consultation from a private hospital outpatient clinic on August 23 and 25. He is in stable condition.
He tested positive for the disease today.
It is the 28th case reported this year. There were 28 cases in both 2012 and 2013.