In its report dated april 2014, World Health Organization confirms antibiotic resistance dissemination in all parts of the world, in hospitals and in community and worries about a possible comeback to a pre-antibiotic era during the 21st century. For the last 15 years, third-generation cephalosporins resistant enterobacteriaceae (3GCREB) prevalence is continuously increasing. Community 3GCREB prevalence has not been studied whereas several observations made in Reunion Island hospital suggest a diffusion in community. In this situation of world-wide and regional extension of bacterial resistance, the investigator offers to study bacterial resistance to antibiotic in Reunion Island community.

The investigator is focused on E. coli species exhibiting BLSE or metallo-betalactamases production that could be encountered du to the increasing level of migratory flow in Reunion Island.

Fecal sample collection will be used for further investigations on bacterial typology.

Inclusion Criteria:

Patients:

• aged over 18 years old
• admitted in emergency ward or intensive care of the university hospital of Reunion Island
• who received the patient information notice and who gave their consent
• who have a stool sample performed in the 48 hours following admission
• who understand and can read French

Exclusion Criteria:

Patients:

• transferred from a short-term, middle-term or long-term stay health facility
• who have a stool sample performed more than 48 hours following admission.

community patients admitted in emergency ward or in intensive care unit for any condition.