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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. SilkComments to Author , and Barbara E. Mahon
Author affiliations: Author affiliation: Centers for Disease Control and Prevention, Atlanta, Georgia, USA

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Table 3

Characteristics of 24 listeriosis outbreaks by Listeria monocytogenes serotype, Foodborne Disease Outbreak Surveillance System, United States, 1998–2008*

Serotype No. outbreaks Total no. cases† Median duration, d (range) No. cases/outbreak No. (%) hospitalized No. deaths (CFR, %)
4b 10 218 68 (1–389) 22 152 (70) 28 (13)
1/2a 8 119 99 (3–351) 15 53 (45) 8 (7)
1/2b 2 5 5 (2–7) 3 3 (60) 0
Unknown 4 17 NA 4 7 (41) 2 (12)

*NA, not available.
†Includes laboratory-confirmed and epidemiologically linked cases.

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