Legionella pneumophila serogroup 1 in a birthing pool

J Hosp Infect. 2012 Sep;82(1):58-60. doi: 10.1016/j.jhin.2012.06.012. Epub 2012 Jul 31.


This report describes a risk assessment and subsequent actions following isolation of Legionella pneumophila serogroup 1 in the water supply to a birthing pool during a planned maintenance programme. A literature search for cases of neonatal legionellosis identified 24 reports of cases among babies aged <2 months, two of which were associated with water births. On this basis, the pool was closed until Legionella spp. were undetectable. Control proved difficult as hyperchlorination failed, and a filter fitted to the thermostatic mixer tap supplying the pool slowed filling so much that additional taps were required to achieve a satisfactory flow rate.

MeSH terms

  • Chlorine / administration & dosage
  • Cross Infection / epidemiology
  • Disinfectants / administration & dosage
  • Female
  • Humans
  • Incidence
  • Infant
  • Infant, Newborn
  • Infection Control / methods
  • Legionella pneumophila / classification
  • Legionella pneumophila / isolation & purification*
  • Legionnaires' Disease / epidemiology*
  • Pregnancy
  • Serotyping
  • Water Microbiology*


  • Disinfectants
  • Chlorine