Slaughtering serological reactors to Brucella ovis infection in rams was associated to Rev 1 vaccine of young lambs to control contagious ram epididymitis in a South France area infected with brucellosis. The incidence of infection decrease from 11,9 to 1,3 p.cent between 1982 and 1989 and the required time for sanitation is discussed according to flocks size and to procedure conditions.