Dean G, McDougall E I, Elian M
J Neurol Neurosurg Psychiatry. 1985 Sep;48(9):859-65. doi: 10.1136/jnnp.48.9.859.
Four out of seven research workers into swayback disease, a neurological disease of lambs, developed symptoms and signs of multiple sclerosis, and were reported in 1947. A further worker later joined the group. All of the original seven have died and two at necropsy had multiple areas of demyelination in the brain and spinal cord. The chance of four or more out of a random group of eight men developing multiple sclerosis is about one in a thousand million. Multiple sclerosis has not occurred in other workers on swayback disease elsewhere.
在研究羔羊神经疾病——摇摆病的七名研究人员中，有四人出现了多发性硬化症的症状和体征，并于1947年被报道。后来又有一名研究人员加入了这个团队。最初的七人都已去世，其中两人尸检时发现大脑和脊髓有多处脱髓鞘病变。在随机挑选的八名男性中，有四人或更多人患多发性硬化症的概率约为十亿分之一。在其他地方研究摇摆病的工作人员中并未出现多发性硬化症。
