The Fraser Health Authority is investigating cluster cases of Legionnaires鈥� disease in Surrey.

Officials said Friday that public health officials are investigating the source of the bacteria.

鈥淟egionnaires鈥� disease is caused by a bacterium called Legionella. Legionella is commonly found in the environment, particularly in freshwater, groundwater, and soil,鈥� a statement read.

鈥淭he bacterium can grow and spread in human-made building water systems like cooling towers, hot tubs that aren鈥檛 drained after each use, decorative fountains, and large plumbing systems.鈥�

Anyone who has developed pneumonia-like symptoms with a high-risk condition (e.g., chronic lung conditions, smokers, elderly, immunocompromised) is advised to seek medical attention.

鈥淚f they have been in the Guildford area of Surrey in the past 10 days (i.e., since Aug. 21), they should also mention this to their doctor for testing, advice, and treatment.鈥�