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Chapter 59 : Occurrence of in Danish Hot Water Systems

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Occurrence of in Danish Hot Water Systems, Page 1 of 2

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Abstract:

In Denmark more than 50% of known cases of Legionnaires' disease are community acquired with no known association with traveling. To assess the role of hot water systems in private homes and institutions as possible sources for infection, a pilot study was performed from October 1999 to May 2000. A total of 46 hot water systems in large buildings situated in or around Copenhagen were included in the study. Twenty-four systems were in public buildings in one municipality. The systems included 13 blocks of flats, 14 schools, seven nursing homes, eight sport centers, two industries, and two other institutions. The water samples were analyzed at The National Centre for Hospital Hygiene, Statens Serum Institute, within 2 days of sampling. Two to five colonies from each water sample were further tested by monoclonal antibodies (Dresden MAb panel) that distinguish between 15 serogroups of . All isolates determined to be serogroup 1 were further characterized by an Enzyme Immuno Assay, distinguishing between MAb 3/1-reactive isolates (Pontiac group) and MAb 3/1-negative isolates (non-Pontiac group). Five of the six serogroups of identified as causing community acquired Legionnaires' disease in Denmark were isolated from the water samples. The results of this pilot study are in accordance with the possibility that domestic hot water systems in private homes and institutions may be the sources of some of the community-acquired cases in Denmark.

Citation: Pringler N, Brydov P, Uldum S. 2002. Occurrence of in Danish Hot Water Systems, p 298-301. In Marre R, Abu Kwaik Y, Bartlett C, Cianciotto N, Fields B, Frosch M, Hacker J, Lück P (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555817985.ch59

Key Concept Ranking

Legionella pneumophila
0.5889466
Polymyxin B
0.515625
0.5889466
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Figures

Image of FIGURE 1
FIGURE 1

viable counts in hot water samples.

Citation: Pringler N, Brydov P, Uldum S. 2002. Occurrence of in Danish Hot Water Systems, p 298-301. In Marre R, Abu Kwaik Y, Bartlett C, Cianciotto N, Fields B, Frosch M, Hacker J, Lück P (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555817985.ch59
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Image of FIGURE 2
FIGURE 2

species and serogroups found in 38 hot water systems. Bars indicate the number of systems containing each serogroup.

Citation: Pringler N, Brydov P, Uldum S. 2002. Occurrence of in Danish Hot Water Systems, p 298-301. In Marre R, Abu Kwaik Y, Bartlett C, Cianciotto N, Fields B, Frosch M, Hacker J, Lück P (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555817985.ch59
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Image of FIGURE 3
FIGURE 3

species and serogroups isolated from community-acquired Legionnaires' disease cases in Denmark (Uldum and Helbig, 5th Int. Conf. Legionella).

Citation: Pringler N, Brydov P, Uldum S. 2002. Occurrence of in Danish Hot Water Systems, p 298-301. In Marre R, Abu Kwaik Y, Bartlett C, Cianciotto N, Fields B, Frosch M, Hacker J, Lück P (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555817985.ch59
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References

/content/book/10.1128/9781555817985.chap59
1. International Organization for Standardization (ISO). 1998. Water Quality—Detection and Enumeration of Legionella.ISO117311998(E). International Organization for Standardization, Geneva, Switzerland.

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