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Emerging Diseases
Shedding light on bleeding calf syndrome

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A CALF is significantly more likely to develop bovine neonatal pancytopenia (BNP) if its mother received the PregSure BVD vaccine before its birth, according to the results of a Defra-funded research project.

Conducted by the Animal Health and Veterinary Laboratories Agency (AHVLA), the Scottish Agricultural College (SAC) and the Moredun Research Institute, the two-year study investigated epidemiological, pathological and virological aspects of BNP in young calves in Great Britain.

The report of the study, which was published on Defra's website on June 8, says that BNP appears to have emerged slowly throughout 2007 and 2008, with the first cases in Great Britain being identified in Scotland in April 2009, England in May 2009 and Wales in October 2009. However, during the study, no patterns suggesting a point source introduction were seen.

The report notes that the incidence of the condition is still low and that the small number of calf deaths attributed to BNP has not …

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