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Enzoonotic Bovine Leukosis :Cow:: Viral infections of the hematopoietic…

- - - - initial spread from first site of infection
    - - when virus has replicated in blood tissues
      - higher virus shedding
      - higher virus titer
    - - caused by replication of viruses introducing virus to the bloodstream
    - - intro of virus w/o replication
      - examples
        
        mosquito inoculation
        
        physical breaches
        
        blood contact
  - - - lymphomas
      - leukemias
- - - - 84-100% prevalence in US
  - - - 26.9% condemnation of dairy cattle
      - 13.5% of beef
      - malignant sarcoma
- - - - genetic resistant
    - - 29%
    - - 29%
    - - <5%
      - condemination
        
        26.9% of dairy cattle
        
        13.5% of beef