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Volume 21, Number 7—July 2015

Results from the National Legionella Outbreak Detection Program, the Netherlands, 2002–2012

Jeroen W. Den BoerComments to Author , Sjoerd M. Euser, Petra Brandsema, Linda Reijnen, and Jacob P. Bruin
Author affiliations: Regional Public Health Laboratory Kennemerland, Haarlem, the Netherlands (J.W. Den Boer, S.M. Euser, L. Reijnen, J.P. Bruin); National Institute for Public Health and the Environment, Bilthoven, the Netherlands (P. Brandsema)

Main Article

Table 4

Characteristics of 105 clusters reported for patients with Legionnaires’ disease (n = 266), the Netherlands, 2002–2012*

Location clusters (%)† 98 (93.3)
Geographic clusters (%)‡ 7 (6.7)
Mean no. patients per cluster (range) 2.9 (2–11)
No. multiple municipal health services involved (%) 50 (47.6)
Mean no. municipal health services involved (range) 1.7 (1–5)

*Study period was August 1, 2002–August 1, 2012.
†A location cluster is defined as cases reported within 2 years of each other in >2 persons who were reported to have been exposed to the same potential source of infection during the 2–14 days before symptom onset.
‡A geographic cluster is defined as cases in >3 persons who lived <1 km apart and whose infections were reported within 6 months of each other.

Main Article

Page created: June 12, 2015
Page updated: June 12, 2015
Page reviewed: June 12, 2015
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