Swine Plague : Septicmmia HcBmorrhagica Suis. 65 



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 miist 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, or the filtrable microbe the fact 

 remains that its great extensions and the resulting fatality are due 

 to the contagion alone, so that extinction remains the true watch- 

 word of success and economy. 



SWINE PI.AGUE : SEPTICEMIA HEMORRHAGICA 



SUIS. 



Definition. Synonym. Bacillmpestus suis, 0.8 — i.Sjit, uonmotile. Patho- 

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

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

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

 lymph glands swoUer, hsemorrhagic, liver and spleenjmay 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, notgasogenic 

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

 cholera. Immunization. Treatthent : asinhogcholeradangerous. Serum- 

 therapy. 



Definition. A contagious bacteridian disease of swine, acute or 

 subacute, characterized by a short incubation, hyperthermia, 

 marked congestion of the mucosae, petechise and circumscribed 

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

 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 already been described in the differential table of allied bac- 

 teria given under hog cholera. It is a short rod, with rounded 

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