Leptospira interrogans serovar balcanica in cattle

Authors: Blackmore DK, Marshall RB, Mackintosh CG
Publication: New Zealand Veterinary Journal, Volume 28, Issue 12, pp 268, Dec 1980
Publisher: Taylor and Francis

Animal type: Cattle, Livestock, Production animal, Ruminant
Subject Terms: Bacterial, Clinical pathology, Diagnostic procedures, Zoonosis, Disease/defect, Infectious disease, Public health
Article class: Correspondence

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Abstract: In 1979, during the course of an epidemiological study of serovar hardjo in dairy herds, an interesting pattern emerged on a Manawatu dairy farm. The majority of milking cows in the herd over the age of 6 years had low Hebdomadis serogroup titres while all cows between 2 and 6 years old were seronegative. This suggested that infection with a Hebdomadis serogroup organism, presumably hardjo, had been present in the herd until 4 years before, when it spontaneously disappeared. All the young stock remained seronegative until April 1979 when 9 out of 50, 8-month-old calves were found to have Hebdomadis serogroup titres. Leptospires were cultured from the urine of two of these calves and they were shown to belong to the Hebdomadis serogroup by agglutination with specific antisera…

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