Volume 7, Number 7—June 2001
Waterborne Outbreak of Tularemia Associated with Crayfish Fishing
|Risk factors considered||Prevalence of exposurea in Cases Controls||Crude ORb||95% CI||Adjusted OR||95% CI|
|Injury on handling crayfish||17/18||6/20||39.7||4.3-369.7|
|Injury on catching c crayfish||8/17||3/20||5.0||1.1-23.8||29.1d||2.6-330.9|
|Injury on cleaning crayfish||10/17||3/20||8.1||1.7-38.6||38.8e||3.5-427.6|
|Not washing crayfish before cleaning||5/12||4/17||2.3||0.4-15.7|
|Washing crayfish by soaking||9/12||10/17||2.1||0.4-10.7|
|Washing hands with soap after cleaning||5/11||11/15||0.3||0.06-1.6|
aDenominator indicates number of persons who answered each question.
bOR = odds ratio; 95% CI = 95% confidence interval.
cInjury on catching = injury while fishing or emptying net.
dAdjusted for cleaning-related injury.
eAdjusted for catching-related injury.