Résumé : A PCR-Denaturing Gradient Gel Electrophoresis (PCR-DGGE) method was used to examine 50 stool samples from children in Belgium with gastroenteritis for an extensive range of Epsilonproteobacteria species. During the 3 month study period, Campylobacter concisus was the most common species. Our observations suggest that C. concisus displays similar microbiologic and clinical features as C. jejuni.