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*Causes a persistent viral infection and lymphocytosis
 
*Causes a persistent viral infection and lymphocytosis
 
*Immunocompromised cattle may develop secondary infections
 
*Immunocompromised cattle may develop secondary infections
*The tranmission is not well known, but the following possibilities are being researched:
+
*The transmission is not well known, but the following possibilities are being researched:
 
**Through milk
 
**Through milk
 
**Through infected semen (e.g.artificial insemination)
 
**Through infected semen (e.g.artificial insemination)
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