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A complete set of data was collected at the Faculty of Veterinary Science through a keyword search of pathology and bacteriology laboratory registers. Additional electronic data were received from an external laboratory. A total of 288 cases were recorded from six provinces. Overall diagnostic rate was 35.1%. In 14.6% of cases, histological evidence of an infectious process was found, but no aetiological agent was detected. Several cases did not include aetiological diagnoses because applicable diagnostic techniques were not available or not applied when necessary. Increased submission of placenta, as well as additional conventional and molecular diagnostic methods, can contribute to an improved diagnostic rate. 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