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Volume 14, Number 1—January 2008

Research

Short- and Long-term Effects of Bacterial Gastrointestinal Infections

Anders Ternhag*Comments to Author , Anna Törner†, Åke Svensson†‡, Karl Ekdahl*§, and Johan Giesecke*§
Author affiliations: *Karolinska Institute, Stockholm, Sweden; †Swedish Institute for Infectious Disease Control, Solna, Sweden; ‡Stockholm University, Stockholm, Sweden; §European Centre for Disease Prevention and Control, Stockholm, Sweden;

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Table 3

Complications associated with gastroenteritis, 3 months postinfection, among 101,855 patients with bacterial gastrointestinal infection, Sweden, 1997−2004*

Disease Infecting organism Obs Exp SIR 95% CI
Respiratory system
Bacterial pneumonia, pneumonitis due to food and vomit Nontyphoid Salmonella spp. 24 13.5 1.8 1.1–2.6
Campylobacter spp. 17 21.4 0.8 0.5–1.3
EHEC 1 0.3 3.1 0.1–17.2
Shigella spp. 1 1.1 0.9 0.02–5.2

Yersinia spp.
4
2.3
1.8
0.5–4.5
Blood
Hemolytic-uremic syndrome Nontyphoid Salmonella spp. 1 <0.05 55.5 1.4–309.1
Campylobacter spp. 2 <0.05 81.0 9.8–292.7

EHEC
13
<0.05
18,333.4
9,761.8–31,350.6
Circulatory system
Aortic aneurysm Nontyphoid Salmonella spp. 10 1.6 6.4 3.1–11.8
Campylobacter spp. 5 2.4 2.06 0.7–4.8
Yersinia spp. 1 0.2 5.2 0.1–28.9
Endocarditis
Nontyphoid Salmonella spp.
2
0.4
5.7
0.7–20.5
Digestive system
Peritonitis Nontyphoid Salmonella spp. 1 0.6 1.9 0.05–10.1
Campylobacter spp. 2 0.9 2.3 0.4–8.4
Perforation of intestine (nontraumatic) Nontyphoid Salmonella spp. 1 0.1 9.7 0.3–54.0
Campylobacter spp. 2 0.2 12.39 1.5–44.7
EHEC 1 <0.05 655.3 16.6–3,651.0
Idiopathic acute pancreatitis Nontyphoid Salmonella spp. 6 2.6 2.3 0.9–5.1
Campylobacter spp. 7 4.1 1.7 0.68–3.5
Hepatic failure
Nontyphoid Salmonella spp.
1
0.3
4.0
0.1–22.2
Infectious diseases
Septicemia Nontyphoid Salmonella spp. 10 2.6 3.9 1.8–7.1
Campylobacter spp. 14 4.1 3.4 1.9–5.7

Shigella spp.
1
0.2
5.1
0.1–28.2
Nervous system
Guillain-Barré syndrome
Campylobacter spp.
13
0.2
66.6
35.5–114.0
Musculoskeletal system
Pyogenic arthritis Nontyphoid Salmonella spp. 4 0.8 5.2 1.4–13.4
Yersinia spp. 1 0.1 10.1 0.3–56.2
Osteomyelitis Nontyphoid Salmonella spp. 3 0.6 5.4 1.1–15.7

*Obs, observed number of cases; Exp, expected number of cases; SIR, standardized incidence ratio; CI, confidence interval; EHEC, enterohemorrhagic Escherichia coli.

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