Presence in Dental Unit Waterlines: A Cultural and Molecular Investigation in the West Bank, Palestine.

A bacterium is ubiquitous in water distribution systems, including dental unit waterlines (DUWLs). Legionellosis is atypical pneumonia, including Legionnaires' disease (LD) and the less acute form of Pontiac fever. Legionellosis occurs as a result of inhalation/aspiration of aerosolized -contaminated water by susceptible patients, health workers, and dentists.