Changes

Chronic infection causes '''heart failure''' and associated signs and death.

Chronic infection causes '''heart failure''' and associated signs and death.

Plasma cell hypertrophy and hypergammaglobulinaemia are evident on haematology and biochemistry.

Plasma cell hypertrophy and '''hypergammaglobulinaemia''' are evident on haematology and biochemistry.

Emaciation

Emaciation

Abortion, premature births and infertility are features, and orchitis in males reduces fertility also.

'''Abortion''', premature births and infertility are features, and '''orchitis''' in males reduces fertility.

===Horses===

===Horses===