Volume 19, Number 1—January 2013
CME ACTIVITY
Listeriosis Outbreaks and Associated Food Vehicles, United States, 1998–2008
Emily J. Cartwright, Kelly A. Jackson, Shacara D. Johnson, Lewis M. Graves, Benjamin J. Silk
, and Barbara E. Mahon
, and Barbara E. MahonTable 2
Characteristics of 24 listeriosis outbreaks by implicated food categories, Foodborne Disease Outbreak Surveillance System, United States, 1998–2008*
| Food category | No. outbreaks | Total no. cases† | No. (%) hospitalized | No. deaths (CFR, %) | Age group, y, no. (%)‡ |
No. (%) female‡ | ||
|---|---|---|---|---|---|---|---|---|
| <1 | 1–49 | >50 | ||||||
| Deli meats | 6 | 132 | 49 (37) | 15 (11) | NA | NA | NA | 40 (45) |
| Frankfurters | 3 | 116 | 101 (87) | 14 (12) | 0 | 52 (46) | 60 (54) | 57 (49) |
| Other meats | 2 | 14 | 3 (21) | 0 | NA | NA | NA | 2 (67) |
| Mexican-style cheese | 4 | 45 | 41 (91) | 1 (2) | 8 (18) | 32 (73) | 4 (9) | 37 (84) |
| Other dairy products | 2 | 8 | 7 (88) | 4 (50) | 1 (13) | 1 (13) | 6 (75) | 4 (50) |
| Salad/other | 3 | 27 | 7 (26) | 3 (11) | 0 | 7 (26) | 20 (74) | 16 (59) |
| Unknown | 4 | 17 | 7 (41) | 1 (6) | 0 | 1 (13) | 7 (88) | 4 (50) |
| Overall | 24 | 359 | 215 (60) | 38 (11) | 10 (4) | 120 (50) | 108 (45) | 160 (54) |
*CFR, case-fatality rate; NA, not available.
†Includes laboratory-confirmed and epidemiologically linked cases.
‡Percentages were calculated on the basis of available information on age distribution (17 outbreaks) and sex (19 outbreaks) for 238 and 296 patients, respectively.
