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January 5, 1901


JAMA. 1901;XXXVI(1):40. doi:10.1001/jama.1901.02470010044012

Walter Reed and James Carroll have made a comparative study of the biological characters and pathogenic actions of bacillus X of Sternberg, bacillus icteroides of Sanarelli, and the hog cholera bacillus.1 The results will be of much interest to those who have followed the controversy in regard to the etiology of yellow fever, which has been going on for some time between these authors and Sanarelli. Reed and Carroll conclude that Sternberg's bacillus X belongs to the colon group, and that Sanarelli's bacillus icteroides, proclaimed by its discoverer to be a cause of yellow fever, is a member of the hog-cholera group, because the various channels of infection, the duration of the disease and the gross and microscopic lesions in mice, guinea-pigs and rabbits are the same for B. icteroides and the hog-cholera bacillus. Comparison of the cultural characteristics also indicate that bacillus icteroides should be put among the

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