Below are the Known Methods of BLV Transmission:
Horizontal Transmission![2012-06-12 7D Phase III.1-9077](/blv/basics/2012-06-12 7D Phase III.1-9077.jpg?language_id=1)
- Biting flies
- Multiple-use hypodermic needles
- Gouge type dehorning and tattooing
- Blood exchange during natural breeding
- Reproductive exam and artificial insemination sleeves contaminated with BLV-infected blood
Vertical Transmission![2021_Calf_MSUDairy_CarlsonPhotographer_cropped](/blv/basics/2021_Calf_MSUDairy_CarlsonPhotographer_cropped.jpg?language_id=1)
- Colostrum and milk
- Placental transmission and transmission by blood exchange during birthing
Go here to learn more about BLV transmission and how to prevent it.