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Volume 23, Number 10—October 2017

Dispatch

Mild Illness during Outbreak of Shiga Toxin−Producing Escherichia coli O157 Infections Associated with Agricultural Show, Australia

Bhakti R. VasantComments to Author , Russell J. Stafford, Amy V. Jennison, Sonya M. Bennett, Robert J. Bell, Christine J. Doyle, Jeannette R. Young, Susan A. Vlack, Paul Titmus, Debra El Saadi, Kari A.J. Jarvinen, Patricia Coward, Janine Barrett, Megan Staples, Rikki M.A. Graham, Helen V. Smith, and Stephen B. Lambert
Author affiliations: Queensland Health, Brisbane, Queensland, Australia (B.R. Vasant, R.J. Stafford, A.V. Jennison, S.M. Bennett, R.J. Bell, C.J. Doyle, J.R. Young, S.A. Vlack, P. Titmus, D. El Saadi, K.A.J. Jarvinen, M. Staples, R.M.A. Graham, H.V. Smith, S.B. Lambert); University of Queensland, Brisbane (S.A. Vlack, S.B. Lambert); Queensland Treasury, Brisbane (P. Coward); Department of Agriculture and Fisheries, Brisbane (J. Barrett)

Main Article

Table 1

Frequency of symptoms among persons, by age group, with cases of Shiga toxin−producing Escherichia coli illness associated with an agricultural show, Brisbane, Queensland, Australia, 2013

Symptom (self reported)
Age group, y. no. positive/no. responded (%)
All
1−4
5−14
>15
Diarrhea 48/50 (96) 16/17 (94) 15/15 (100) 17/18 (94)
Bloody diarrhea* 19/46 (41) 1/16 (6) 7/13 (54) 11/17 (65)
Abdominal pain 37/40 (93) 12/14 (86) 9/9 (100) 16/17 (94)
Fever 14/44 (32) 6/16 (38) 4/14 (29) 4/14 (29)

*Older children and adults were significantly more likely to report bloody diarrhea than children <5 years of age (p = 0.001 by χ2 test for linear trend).

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