Swine Plague : Septicemia Hemorrhagica Suis. 47 



The soundest and only truly economical course in dealing with 

 this and other deadly infections of swine is the radical extinction 

 of the germ. When the people can be educated up to this we 

 shall see the dawn of a brilliant future for our animal industries. 

 Until then we must be satisfied to fall back upon, and make the 

 best use of the temporizing measures now in vogue or that may 

 hereafter be devised. Even if it should be shown that hog chol- 

 era is at long intervals developed from a ' sport ' of the usually 

 harmless bacillus coli commune, the fact remains that its great 

 extensions and the resulting fatality are due to the contagion 

 alone, so that extinction remains the true watchword of success 

 and economy. 



SWINE PLAGUE: SEPTICEMIA HEMORRHAGICA 



SUIS. 



Definition. Synonym. Bacillus pestis suis, o"8 — 1.5^, nonmotile. Patho- 

 genesis. Accessory causes, as in hog cholera : less vitality than in virus of 

 hog cholera, bacillus in apparently healthy, deadly to birds and rodents. 

 Lesions : like as in hemorrhagic septicaemia, lungs suffer more than bowels, 

 lymph glands swollen haemorrhagic, liver and spleen may seem almost nor- 

 mal, bowels slightly congested, marked emaciation. Symptoms : Acute 

 cases like hog cholera, shorter incubation — 1 day, troubled breathing when 

 driven, cough, congested petechiated skin, hyperthermia, costiveness fol- 

 lowed by diarrhoea. Diagnosis : constancy and predominance of lung 

 lesions and symptoms, nonmotile bacillus with polar staining, not gasogenic 

 with glucose, very fatal to birds and rodents. Prevention : as in hog 

 cholera. Immunization. Treatment : as in hog cholera dangerous. Serum- 

 therapy. 



Definition. A contagious bacteridian disease of swine, acute or 

 subacute, characterized by a short incubation, hyperthermia, 

 marked congestion of the mucosae, petechiae and circumscribed 

 blood extravasations in the skin, subcutis, mucosae, submucosae, 

 and tissues, swelling, congestion and petechiation of the lymph 

 glands, and a marked tendency to inflammatory localization in the 

 lungs. 



Synonyms. Th. Smith identifies this affection with the 

 " Schweineseuche " of Germany. 



Bacteriology. The bacillus of Swine Plague (B. Pestis Suis) 

 has alreadv been described in the differential table of allied bac- 



