Table 3

Association of the CJIE1 prophage and the CJIE1 prophage carrying ORF 11 with patient symptoms
Symptoms Patients with symptoms (%) versus total Association of C. jejuni strain characteristics with symptoms: number associated with patient and symptom vs total (%)
No CJIE1 (%) CJIE1 only (%) CJIE1 + ORF 11
Diarrhea 214/218 (98.2) 158/162 (97.5) 16/16 (100) 15/15 (100)
Abdominal pain 169/204 (83.0) 127/153 (83.0) 9/16 (56.3) 12/15 (80.0)
Fever 134/219 (61.2) 107/146 (73.3) 4/16 (25.0) 6/14 (42.9)
Malaise 127/199 (63.8) 95/145 (65.5) 9/16 (56.3) 9/14 (64.3)
Nausea 113/205 (57.5) 87/151 (57.6) 8/16 (50.0) 9/14 (64.3)
Headache 91/201 (45.3) 70/142 (49.3) 7/16 (43.8) 4/11 (36.4)
Bloody diarrhea 49/145 (33.7) 33/99 (33.3) 4/15 (26.7) 8/14 (57.1)
Vomiting 73/214 (34.1) 56/157 (35.7) 3/16 (18.8) 5/14 (35.7)
Duration > 10 days 33/137 (24.1) 35/102 (34.3) 2/10 (20.0) 3/9 (33.3)
Hospitalization 15/142 (10.6) 10/125 (6.6) 1/13 (7.7) 2/13 (15.4)

Note that there were different response rates for different questions, resulting in different denominators. “Patients with symptoms” refers to the number of patients having the particular symptom compared with the total number of patients answering the question yes or no on the questionnaire. This column provides data on the overall frequency of symptoms. Isolates for further analysis were not available for all patients answering the comprehensive questionnaire. Data in the section “Association of C. jejuni strain characteristics with symptoms…” contains symptom information from patients from whom isolates were obtained and were typed. The frequencies with which each symptom was associated with the presence of absence of the CJIE1 prophage and also the presence within the CJIE prophage of ORF11 have been compared to determine whether either CJIE1 alone or CJIE1 with ORF11 have any significant effect on patient symptoms compared with absence of the prophage.

Clark et al.

Clark et al. BMC Microbiology 2012 12:269   doi:10.1186/1471-2180-12-269

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