AGE was the cause of admission in 16.5 % of our patients (65 episodes, 62 patients) with two seasonal peaks (February-March and August). A causative agent was isolated in 68.6 % of the patients with a stool test (35 % rotavirus, 31.3 % Salmonella, 1.9 % Shigella). Although 74 % of the patients had mild dehydration, exclusive oral rehydration therapy was provided in very few patients: 89.2 % of the patients were treated with IV therapy and 20 % with antibiotics. The total length of stay was 206 days (mean 3.1 days). The direct medical cost was 44,254.74 euros (median 710.46 euros/patient, 95 % CI: 616.37-804.56 euros) and the main component of this cost (82.9 %) was hospitalization. Conclusions AGE was one of the main causes of hospitalization in our department. The use of oral rehydration was low. The economic and social cost was considerable.