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Created page with ' **Commonest cause of infectious abortion in dairy cattle **Congenitally infected calves can have encephalomyelitis and paresis **Abortion usually occurs between 5-7 months of ge…'
**Commonest cause of infectious abortion in dairy cattle
**Congenitally infected calves can have encephalomyelitis and paresis
**Abortion usually occurs between 5-7 months of gestation but can occur as early as 3 months
**No other clinical signs in the cow
**Repeat abortions possible in same cow (persistently infected)
'''Prevention and Control'''
*Do not allow dogs access to calving cows, placental membranes and aborted or dead calves
*Do not allow dogs to defecate in cattle feeding areas
*Identify and cull seropositive cattle, or do not breed from them or their progeny
*Select seronegative cattle for breeding
*Vaccinate
**Only in the USA
**Neoguard or Intervet
**Killed protozoal vaccine for healthy, pregnant cows
**Dosed in first 3 weeks of pregnancy and then every 3-4 weeks during gestation
**Revaccination with 2 doses during each subsequent pregnancy[[Category:Tissue_Cyst_Foming_Coccidia]][[Category:Cattle]]