830 PATHOGENIC MICROORGANISMS 



Infection with the bacillus of swine plague, in hogs, is often 

 accompanied by an infection with the hog-cholera bacillus (Schweine- 

 pest). The latter, as we have seen, is a microorganism belonging 

 to the enteritidis group, intermediate between Bacillus coli and 

 Bacillus typhosus, and differing from suisepticus in being actively 

 motile, possessing flagella, not showing the polar staining, having 

 a more slender morphology, and producing gas upon dextrose broth. 

 A confusion between the two bacilli frequently occurs because of 

 their nomenclature. Bacteriologically and pathogenically, they are 

 quite distinct. Bacillus suisepticus produces an acute septicemia, 

 accompanied by bronchopneumonia and usually not affecting the 

 gastro-intestinal canal. The bacillus of hog cholera produces an 

 infection localized in the intestinal canal. 



