title: The efficacy of control measures for eradicating legionellae in showers.
abstract: The efficacy of secondary control measures on showers colonized with legionellae was assessed. Hyperchlorination of shower heads and angle valve strainers had only a short-lived effect on legionellae. Automatic drain valves fitted to showers were ineffective in maintaining a reduction in the number of legionellae in shower water. Regular flushing of showers reduced legionellae to below detectable levels. Removal of dead-legs from the feed-pipes supplying hot water to showers, resulted in a decrease in legionellae in these sites but an increase in legionellae colonizing mixer valve components.
authors.affiliation: Department of Medical Microbiology, University of Liverpool.
authors.forename: T
authors.initials: T
authors.lastname: Makin
authors.forename: C A
authors.initials: CA
authors.lastname: Hart
mesh_terms: D001494:Baths; D007875:Legionella / Q000302:isolation & purification*; D012498:Sanitary Engineering; D014881:Water Supply