NSW Health has issued a warning of a Legionnaires' outbreak in Sydney's west, with two Lidcombe residents contracting the illness.
Anyone who has recently been in Lidcombe has been warned to watch for symptoms as the couple had spent time in the area.
The male in his 70s and female in her 80s have been reported to NSW Health after becoming unwell, prompting an investigation following their diagnosis.
Legionnaires' disease occurs when a person breathes in contaminated dust or water, typically due to an issue with air-conditioning units.
Symptoms include chills, fever, a cough and shortness of breath, with middle-aged and older people at greater risk.