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Fast Facts

BVD Fast Facts

  • BVDV first recognized in 1946 in upstate New York, now identified worldwide

  • Antibody prevalence studies show as high as 60-70% prevalence of BVD in herds (Bovine Viral Diarrhea Virus, Goyal and Ridpath, Blackwell Publishing)

  • Estimated that 70-90% of acute/transient infections are subclinical (Ames et al.,1986)

  • Costs associated with BVD infections are incurred from:

    • Reproductive losses

    • Increased Morbidity

    • Increased Mortality

    • Reduced Performance

  • Feeder - loss of $67 per exposed animal. (Hessman)

  • Cow/calf - estimated losses of $35-$56 per calf (Ridpath)

  • Dairy - losses estimated at $65 per calf (Ellis AABP 04)

  • BVD causes immunosuppression which allows for greater virulence of common pathogens

  • Acts synergistically with other pathogens to cause more severe pneumonia

    • BVD infection alone caused mild pneumonia involving 2-7% of lung

    • M. hemolytica infection alone caused pneumonia involving 15% of lung

    • BVD infection followed by M. hemolytica caused pneumonia involving 40-75% of lung

Preventing BVD in Cattle Herds

BVD is a highly contagious and transmissible virus in cattle. To help reduce BVD virus into cattle herds:

  • Ship out infected animals. PI (Persistently infected) cattle will always be infected

  • Isolate cattle purchased outside of the herd, until calves are born and tested

  • Make sure females are vaccinated

  • Maintain closed herd when possible

  • Quarantine and test new animals

  • Address health problems quickly

  • Determine why cows abort

  • Discuss herd vaccination programs with your veterinarian

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