McCausland I P, Badman R T, Hides S, Slee K J
Cornell Vet. 1984 Apr;74(2):146-54.
Foetuses recovered from multiple abortions in four dairy herds had multifocal nonsuppurative encephalitis, myocarditis and hepatitis. Focal placentitis was usually present. Sarcocystis-like protozoa were found in the brains of foetuses from two of the outbreaks. Apart from excess salivation in a few cows in one herd, farmers reported no clinical abnormalities prior to the abortions, and all cows remained normal after the abortions. Dogs and cats fed an affected foetus and neonatal calves from the affected herds failed to excrete protozoa in their faeces. The identity of the protozoa in the foetal brain was not confirmed.
从四个奶牛群多次流产中回收的胎儿患有多灶性非化脓性脑炎、心肌炎和肝炎。通常存在局灶性胎盘炎。在其中两次疫情中流产胎儿的大脑中发现了类似肉孢子虫的原生动物。除了一个牛群中的几头奶牛出现流涎过多外，农民报告在流产前没有临床异常，并且所有奶牛在流产后仍保持正常。给来自受影响牛群的患病胎儿和新生小牛喂食的狗和猫粪便中未排出原生动物。胎儿大脑中原生动物的身份未得到确认。
