Volume 16, Number 3—March 2010
Letter
Yersinia pseudotuberculosis and Y. enterocolitica Infections, FoodNet, 1996–2007
Cherie Long, Timothy F. Jones, Duc J. Vugia, Joni Scheftel, Nancy Strockbine, Patricia Ryan, Beletshachew Shiferaw, Robert V. Tauxe, and L. Hannah Gould
Table
Comparison of Yersinia pseudotuberculosis and Y. enterocolitica infections, FoodNet, 1996–2007*
| Characteristic | Y. pseudotuberculosis | Y. enterocolitica | p value |
|---|---|---|---|
| No. infections | 18 | 1,355 | |
| Annual average incidence† (range) | 0.04 (0.00–0.10) | 3.45 (0.77–7.87) | |
| Median patient age, y (range) | 47 (16–86) | 6 (0–94) | <0.0001 |
| Male sex, no. (%) patients | 12 (67) | 672 (50) | 0.1638 |
| White race, no. (%) patients | 10 (56) | 480 (35) | 0.0115 |
| Western region of USA (CA, OR), no. (%) | 10 (56) | 308 (22) | 0.0024 |
| Winter season, no. (%) | 8 (44) | 536 (40) | 0.8091 |
| Invasive specimen collection site, no. (%) | 12 (67) | 106 (8) | <0.0001 |
| Hospitalized, no. (%) patients | 13 (72) | 411 (30) | 0.0003 |
| Median hospitalization, d (range) | 9 (2–35) | 4 (0–107) | 0.0118 |
| Died, no. (%) patients | 2 (11) | 15 (1) | 0.0248 |
*CA, California; OR, Oregon.
†Cases per 1,000,000 persons.
