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VETERINARY BACTERIOLOGY 



The following table, adapted from a paper by Park and Krum- 

 weide, summarizes 1042 cases of human tuberculosis reported in 

 which the bovine or human character of the organism was deter- 

 mined. The age groupings are particularly interesting. 



There seems to be no reasonable doubt but that the bovine 

 tubercle bacillus may infect the human. The above table shows 

 it to be common enough in children under sixteen years to justify 

 all reasonable precautions against the ingestion of infected meat 

 and milk. The danger to the adult would appear to be almost 

 negligible. 



Bacillus of Johnes' Disease 



Disease Produced. Chronic enteritis or para-tubercular dys- 

 entery of cattle. 



Johnes and Frothingham, in 1895, described an acid-fast 

 organism as the probable cause of chronic dysentery in cattle. 

 They believed the organism to be identical with the avian tubercle 

 bacillus, but this has been disproved by subsequent investigations. 

 It has not received a specific name. 



Distribution. The disease has been noted in various parts of 

 Europe and in the United States. Cases have been reported from 

 Wisconsin, Minnesota, and Iowa. 



