Since 1937, when Theiler1 first described spontaneous encephalomyelitis of albino mice (Theiler's disease; “mouse poliomyelitis”) and the virus causing it, two major developments have given this disease renewed importance because they confirm the impression that one is dealing here with an infection more closely related to human poliomyelitis than is any other known disease. In the first place, the finding by Olitsky2 and by Theiler and Gard3 of Theiler's virus in the intestinal contents and feces not only of mice showing the signs of the spontaneous or experimental malady but also of normal, young adult or mature animals, recalls similar results obtained in studies on human poliomyelitis.45 Again another epidemiological feature is shown commonly by the two diseases, i. e., the analogous incidence of paralytic cases of one in more than 5000.The second recent development under consideration concerns the successful transmission by Armstrong6 of one strain (Lansing) of human poliomyelitic virus to the white ...
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Olitsky et al. (1941) studied this question.