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Volume 8, Number 1—January 2002

Research

A Large Outbreak of Legionnaires’ Disease at a Flower Show, the Netherlands, 1999

Jeroen W. Den Boer*†Comments to Author , Ed P.F. Yzerman‡, Joop Schellekens*, Kamilla D. Lettinga§, Hendriek C. Boshuizen*, Jim E. Van Steenbergen¶, Arnold Bosman*, Susan Van den Hof*, Hans A. Van Vliet*, Marcel F. Peeters#, Ruud J. Van Ketel§, Peter Speelman§, Jacob L. Kool*, and Marina A.E. Conyn Van Spaendonck*
Author affiliations: *National Institute of Public Health and the Environment, Bilthoven, the Netherlands; †Municipal Health Service Zuid-Kennemerland, Haarlem, the Netherlands; ‡Regional Laboratory of Public Health Haarlem, Haarlem, the Netherlands; §Academic Medical Center, Amsterdam, the Netherlands; ¶National Outbreak Structure for Infectious Diseases, Den Haag, the Netherlands; #Regional Laboratory of Public Health Tilburg, Tilburg, the Netherlands

Main Article

Table 4

Characteristics of persons with legionellosis who worked in the right half of hall 3 compared with staff members who did not get become ill and who worked in the same hall

Cases in right half of hall 3 (n=7) n (%) Cohort respondents in hall 3 (n=151) n (%)
Age group
<30 0 (0) 23 (15.7)
30-39 0 (0) 24 (16.3)
40-49 1 (14) 29 (19.7)
50-59 4 (57) 46 (31.3)
60-69 2 (29) 20 (13.6)
>70 0 (0) 5 (3.4)
Males 6 (86) 67 (45.3)
Smokers 4 (67)a 44 (29.1)
Immunocompromised 0 (0) 5 (3.3)
History of pneumonia 1 (14) 5 (3.3)
History of diabetes 1 (14) 5 (3.3)

aData missing for one case.

Main Article

1A bubblemat is an inflatable rubber mat that causes a whirlpool-like effect when placed in a normal bathtub.

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