Volume 7, Number 7—June 2001
Research
Waterborne Outbreak of Tularemia Associated with Crayfish Fishing
Pedro Anda*
, Javier Segura del Pozo*†, José María Díaz García‡, Raquel Escudero*, F. Javier García Peña§, M. Carmen López Velasco‡, Ricela E. Sellek*, M. Rosario Jiménez Chillarón‡, Luisa P. Sánchez Serrano*, and J. Fernando Martínez Navarro*
, Javier Segura del Pozo*†, José María Díaz García‡, Raquel Escudero*, F. Javier García Peña§, M. Carmen López Velasco‡, Ricela E. Sellek*, M. Rosario Jiménez Chillarón‡, Luisa P. Sánchez Serrano*, and J. Fernando Martínez Navarro*Table 4
Results of case-control study of tularemia in crayfish
| 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.
