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Caused by the protozoan parasite ''[[Neospora|Neospora caninum]]'' and is the commonest cause of abortion in dairy cattle. ''Neospora caninum'' is similar to ''Toxoplasma gondii'' and although the complete lifecycle of the protozoa is unknown, the dog has been found to be the definitive host.
Caused by the protozoan parasite ''[[Neospora|Neospora caninum]]'' and is the commonest cause of abortion in dairy cattle. ''Neospora caninum'' is similar to ''Toxoplasma gondii'' and although the complete lifecycle of the protozoa is unknown, the dog has been found to be the definitive host.
Stillborn calves can be born from infected dams and congenitally infected calves may be born with encephalomyelitis. Abortion usually occurs between 5-7 months of gestation but can occur as early as 3 months. Often no other clinical signs are present in the cow.
Stillborn calves can be born from infected dams and congenitally infected calves may be born with encephalomyelitis. Abortion usually occurs between 5-7 months of gestation but can occur as early as 3 months.
==Signalment==
==Signalment==