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=Diagnosis=
=Diagnosis=
Identification of enlarged lymph nodes without a raised rectal temperature may instigate suspicion.
Agar Gel Immuno Diffusion (AGID) is the official standard test approved by most governments. This test is usually accurate by 2-4weeks following infection. This test however cannot differentiate between infected cattle and those with passive immunity from colostrum.
Radioimmunoassay and serum or bulk milk ELISA are also available. Antibodies may not be present for up to 12 weeks following onset of infection.
PCR can also be performed on peripheral blood lymphocytes.
Multiple, firm white tumours may be present in any organ on post-mortem examination. In young animals, the common sites are the kidneys, thymus, liver, spleen, and lymph nodes. In adults, the heart, abomasum, and spinal cord are often involved.
=Treatment=
=Treatment=