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Chapter 36 : Serogroup and Subgroup Distribution among Patients with Legionnaires' Disease in Denmark

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Serogroup and Subgroup Distribution among Patients with Legionnaires' Disease in Denmark, Page 1 of 2

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Abstract:

From January 1994 to June 2000, legionellae were isolated by culture from 195 patients with Legionnaires’ disease in Denmark. In this survey the authors present the serogroup and subgroup distribution of the isolates stratified according to where the patients acquired the infection: in the community (in Denmark) or during hospitalization or during traveling abroad. Isolates from 190 patients were of which 185 could be assigned to a definitive serogroup or subgroup. Five isolates were non-: one was , two were , and two were . For cases where the infection was acquired in Denmark, only 39.7% (69 of 174) of cases were caused by serogroup 1 (Pontiac subgroups only 27.6%). serogroup 3 was a relatively common cause of community-acquired and nosocomial Legionnaires’ disease in Denmark, accounting for 20% of all culture-confirmed cases. The sensitivities of the commercially available urinary antigen tests for serogroups other than serogroup 1 is low and is also lower for serogroup 1 non-Pontiac subgroups than for Pontiac subgroups. It is therefore important to supplement the use of urinary antigen assays in the diagnosis of Legionnaires' disease with other methods such as PCR and culture, particularly for the groups of patients with underlying disease and for those who are infected during hospitalization.

Citation: Uldum S, Helbig J. 2002. Serogroup and Subgroup Distribution among Patients with Legionnaires' Disease in Denmark, p 200-203. 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.ch36

Key Concept Ranking

Legionella pneumophila
0.77272725
Legionella
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0.77272725
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Figures

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FIGURE 1

Subgroup and serogroup distribution of clinical isolates of e according to category of infection (figures from Table 1 ). The group “Other serogroups” contains all non-serogroup 1, 3, and 6 serogroups and non- species. Lp, .

Citation: Uldum S, Helbig J. 2002. Serogroup and Subgroup Distribution among Patients with Legionnaires' Disease in Denmark, p 200-203. 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.ch36
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References

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1. Helbig, J. H.,, J. B. Kurtz,, M. C. Pastoris,, C. Pelaz,, and P. C. Lück. 1997. Antigenic lipo-polysaccharide components of Legionella pneumophila recognized by monoclonal antibodies: possibilities and limitations for division of the species into serogroups. J. Clin. Microbiol. 35:28412845.
2. Joseph, C. A.,, J. M. Watson,, T. G. Harrison,, and C. L. Bartlett. 1994. Nosocomial Legionnaires’ disease in England and Wales, 1980-92. Epidemiol. Infect. 112:329345.
3. Marston, B. J.,, H. B. Lipman,, and R. F. Breiman. 1994. Surveillance for Legionnaires’ disease. Risk factors for morbidity and mortality. Arch. Intern. Med. 154:24172422.
4. Uldum, S.,, and S. Bang. 2000. Legionella infections 1998. EPI-NEWS, No. 2. Statens Serum Institut, Copenhagen, Denmark.
5.World Health Organization. 2000. Legionnaires’ disease, Europe, 1999. Wkly. Epidemiol. Rec. 43:347352.

Tables

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TABLE 1

Serogroup and subgroup distribution of clinical isolates of legionellae

Citation: Uldum S, Helbig J. 2002. Serogroup and Subgroup Distribution among Patients with Legionnaires' Disease in Denmark, p 200-203. 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.ch36

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