title: Comparison of rheumatological and gastrointestinal symptoms after infection with Campylobacter jejuni/coli and enterotoxigenic Escherichia coli.
abstract: OBJECTIVE
  To estimate the incidence of postinfectious joint complaints after Campylobacter jejuni/coli enteritis compared with enteritis caused by enterotoxigenic E coli (ETEC). To compare gastrointestinal symptoms, antibiotic treatment, and antibody levels among patients with and without joint symptoms.
  
  
  METHODS
  Questionnaires were sent to 210 consecutive patients with Campylobacter infection and an equal number of patients with E coli (ETEC). Blood samples for anti-Campylobacter antibodies were collected after two weeks, three months, six months, and two years.
  
  
  RESULTS
  Twenty seven of 173 (16%) patients with Campylobacter and 10/177 (6%) with E coli (ETEC) reported joint symptoms (p=0.004). In the Campylobacter group duration of diarrhoea was a median of 13 days for patients with arthralgia and seven days for those without joint pain (p=0.0058). Patients with E coli had diarrhoea of longer duration than patients infected with Campylobacter (14 days v seven days; p=0.0005). E coli patients had fewer gastrointestinal symptoms than Campylobacter patients (p=0.0001). Fifty nine per cent of Campylobacter patients with joint pain had received antibiotic treatment because of enteritis compared with 26% with enteritis only (p=0.03). Campylobacter species and serotypes were equally distributed in both groups and there was no difference in anti-Campylobacter antibody levels between the groups.
  
  
  CONCLUSIONS
  There was a significantly increased risk of developing joint symptoms after contracting Campylobacter infection compared with E coli. Campylobacter patients with joint pain had more severe gastrointestinal symptoms and longer duration of diarrhoea. Antibiotic treatment does not seem to prevent reactive joint symptoms. Levels of anti-Campylobacter antibodies were the same in both groups.
authors.affiliation: Department of Autoimmunology, Statens Serum Institut, Artillerivej 5, DK-2300 Copenhagen S, Denmark. hlo@ssi.dk
authors.forename: H
authors.initials: H
authors.lastname: Locht
authors.forename: K A
authors.initials: KA
authors.lastname: Krogfelt
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016918:Arthritis, Reactive / Q000382:microbiology*; D002169:Campylobacter Infections / Q000150:complications*; D017000:Campylobacter coli; D016123:Campylobacter jejuni; D016009:Chi-Square Distribution; D003967:Diarrhea / Q000382:microbiology*; D004926:Escherichia coli; D004927:Escherichia coli Infections / Q000150:complications*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D018709:Statistics, Nonparametric; D013997:Time Factors