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Volume 8, Number 9—September 2002

Research

The 2000 Tularemia Outbreak: A Case-Control Study of Risk Factors in Disease-Endemic and Emergent Areas, Sweden

Henrik Eliasson*, Johan Lindbäck†, J. Pekka Nuorti‡, Malin Arneborn†, Johan Giesecke†, and Anders Tegnell†Comments to Author 
Author affiliations: *Örebro University Hospital, Örebro, Sweden; †Swedish Institute for Infectious Disease Control, Solna, Sweden; ‡National Public Health Institute, Helsinki, Finland;

Main Article

Table 2

Comparison of risk factors for tularemia in disease-endemic and -emergent areas, Sweden, 2000

Univariate analysis
Risk factors Disease-endemic areas
Emergent areas
Cases Controls Matched odds ratio 95% CIa Cases Controls Matched odds ratio 95% CI
Mosquito bites 78/81 119/152 8.4 1.9 to 37 93/94 150/181 9.1 2.1 to 40
Owning a cat 37/84 29/159 4.4 2.2 to 9.0 29/105 38/195 1.6 0.8 to 3.0
Farming 15/81 8/152 7.5 2.1 to 27 9/101 15/186 0.8 0.3 to 2.3
Visiting wooded areas 50/79 85/152 1.1 0.6 to 1.9 75/100 102/186 2.4 1.3 to 4.3
Multivariate analysis
Mosquito bites 7.6 1.6 to 36 9.4 2.1 to 43
Owning a cat 4.0 1.6 to 10 1.2 to 5.5
Farming 4.9 1.1 to 22

aCI, confidence interval.

Main Article

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