Observations on three outbreaks of Leptospira interrogans serovar pomona infection in lambs

Authors: Collins-Emerson J, Cooke MM, Vermunt JJ, Alley MR, West DM
Publication: New Zealand Veterinary Journal, Volume 42, Issue 4, pp 133-136, Aug 1994
Publisher: Taylor and Francis

Animal type: Livestock, Production animal, Ruminant, Sheep
Subject Terms: Bacterial, Disease transmission, Epidemiology, Zoonosis, Disease/defect, Infectious disease, Public health
Article class: Clinical Communication

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Abstract: Sickness and deaths associated with leptospirosis were reported in three lamb flocks in the Manawatu region. The clinical, pathological and serological features of Leptospiru interrogans serovar pomona infection are described. The mucous membranes of affected animals were pale and jaundiced. Haemoglobinuria, haemoglobinaemia and centrilobular hepatocellular necrosis were also consistent findings. All clinically sick lambs had very high titres in the microscopic agglutination test for L. pomona. Circumstantial evidence of pigs being the source of infection was found in one of the three cases.

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