Control of nosocomial Legionnaires' disease by keeping the circulating hot water temperature above 55°C: experience from a 10-year surveillance programme in a district general hospital
2002 (English)In: Journal of Hospital Infection, ISSN 0195-6701, E-ISSN 1532-2939, Vol. 50, no 3, 213-219 p.Article in journal (Refereed) Published
After a nosocomial outbreak of Legionnaires' disease in a 450-bed district general hospital in 1991, the circulating hot water temperature was kept above 55°C as the sole control measure. From 1991 to 2000, all cases of nosocomial pneumonia were clinically monitored and tested for Legionella pneumophila serogroup 1 by serology or urinary antigen detection. Water samples from peripheral tap sites were cultured for Legionella spp. twice a year. An infection with L. pneumophila serogroup 1 was diagnosed in four out of 366 (1.1%) patients treated for nosocomial pneumonia, representing one case per 26 000 admissions. All patients were cured without complications. L. pneumophila serogroup 1 was isolated in 30 of 251 (12%) cultured hospital water samples during the monitoring period. We conclude that control of nosocomial Legionnaires' disease in a primary referral hospital is possible by keeping the circulating hospital hot water temperature above 55°C, together with careful clinical surveillance. Complete eradication of Legionella spp. from the hot water system does not seem necessary.
Place, publisher, year, edition, pages
2002. Vol. 50, no 3, 213-219 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-26410DOI: 10.1053/jhin.2002.1185Local ID: 10951OAI: oai:DiVA.org:liu-26410DiVA: diva2:246959