A study on management and economics of dairy cow mastitis was undertaken between February and September 2001 in the urban and peri-urban areas of Addis Ababa milk shed. Ethiopia thernStudy had the following main objectives: prevalence estimation. Risk factor assessment andrnEconomic impact of mastitis. Questionnaire survey was used to gather various risk factors. WhilernClinical examination and California .mastitis test (CMT) screening were used to determinernMastitis prevalence. Economic impact of mastitis was assessed using 51 dairy herds randomlyrnSelected for the study