title: Ovine abortion and neonatal death due to toxoplasmosis in Montana.
abstract: Of 33 ewes in a flock in Montana, 6 aborted or gave birth to weak lambs, which died within 2 days after birth. Two lambs and a placenta from 1 ewe as well as 1 lamb from another ewe were submitted for diagnosis. Focal necrotizing placentitis, focal pneumonia, focal hepatitis, focal interstitial nephritis, and focal nonsuppurative encephalitis were seen in tissue sections from 2 of the lambs. Toxoplasma gondii was found in smears and sections of the placenta and in sections of lung from 1 lamb. Mice inoculated with tissues from a lamb developed dye test antibodies to T gondii. Eleven of 12 ewes from the same flock had dye test antibody titers of 1:16 or more, and titers were 4-fold higher in aborting ewes than in ewes with normal lambs.
mesh_terms: D000031:Abortion, Septic / Q000453:epidemiology / Q000209:etiology* / Q000473:pathology; D000034:Abortion, Veterinary / Q000453:epidemiology / Q000209:etiology* / Q000473:pathology; D000818:Animals; D000831:Animals, Newborn / Q000469:parasitology; D004396:Coloring Agents; D005260:Female; D009009:Montana; D010920:Placenta / Q000469:parasitology; D011247:Pregnancy; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology / Q000209:etiology* / Q000473:pathology; D014122:Toxoplasma / Q000276:immunology / Q000302:isolation & purification; D014124:Toxoplasmosis, Animal / Q000150:complications* / Q000453:epidemiology / Q000473:pathology
chemical_list: D004396:Coloring Agents