Authors report on epidemiologic, bacteriology and therapeutic data related to 1991 cholera outbreak in Benin in the general context of the 7th world pandemic. 7474 cases were notified from all over the country. Vibrio cholerae 01, El Tor biotype, was identified in many patients stools and in the surroundings. Control measures implemented in this situation are described: early parenteral and mainly oral rehydration, antibiotic treatments for patients and contacts, systematic home control around cases, wells disinfection and general hygiene promotion, mobilization of the Civil Service Authorities and population education. Authors conclude that strict epidemiologic monitoring is necessary in epidemic circumstances as well as during endemo-sporadic period.