Serum agglutinating antibodies to Leptospira interrogans serovar canicola presumed due to serovar robinsoni infection in an Australian dog
Australian Veterinary Journal 67(6): 232
ISSN/ISBN: 0005-0423 PMID: 2222370 DOI: 10.1111/j.1751-0813.1990.tb07771.x
In February 1988, serum from a one-year old Doberman dog from East Sydney was tested for agglutinins to serovars canicola and icterohaemorrhagiae prior to export. The dog was healthy and had been previously resident in north Queensland. The microscopic agglutination test (MAT) titre to serovar canicola was 300 and to icterohaemorrhagiae <30. Eleven weeks later, despite treatment with dihydrostreptomycin, the titre remained at 300. Attempts to detect or isolate leptospires from a urine sample were unsuccessful. Further testing at the reference laboratory detected MAT titres of 200 to serovars canicola and broomi, 100 to serovar bindjei (all serogroup Canicola) and 500 to serovar robinsoni, serogroup Pyrogenes as well as 100 to serovar ballum, serogroup Ballum. As titres to serogroup Pyrogenes are frequently associated with cross reactions to serogroup Canicola it is thought the dog was exposed to serovar robinsoni and that the titre to serovar canicola was due to a cross reaction.