. The pathology and differential diagnosis of infectious diseases of animals. Veterinary medicine -- Diagnosis; Communicable diseases in animals. 72 SWINE PLAGUE Annual Report of the Bureau of Animal Industry for 1886. Smith described swine plague as an independent disease, although it is often associated with hog cholera in the same animal. On account of its frequent association with hog cholera, it has been thought by some investigators to be a secondary infection only. In 1895 the writer investigated several outbreaks of this disease in southern Minnesota where it occurred uncomplicated wit
. The pathology and differential diagnosis of infectious diseases of animals. Veterinary medicine -- Diagnosis; Communicable diseases in animals. 72 SWINE PLAGUE Annual Report of the Bureau of Animal Industry for 1886. Smith described swine plague as an independent disease, although it is often associated with hog cholera in the same animal. On account of its frequent association with hog cholera, it has been thought by some investigators to be a secondary infection only. In 1895 the writer investigated several outbreaks of this disease in southern Minnesota where it occurred uncomplicated with hog cholera. More recently two epizootics of swine plague have been studied in New York State where no evidence was found of its being a secondary infection but where in every particular its independent nature was indicated. ^ 67. Geographical distribution. Swine plague is a wide spread disease in this country. It seems to occur more or less frequently in every state in the Union. It is quite widely distributed in Ger- many, but to what extent it exists in other countries there is little or no available evidence. ^ 68. Etiology. Swine plague is caused by a non- motile, elongated, oval bac- terium described by Smith in 1886. It is identical with the bacillus of Schzveineseuche decribed by Loeffler in 1885. Fig. 9. Bacterium of swine plague Hueppe proposed the name from a cover-glass preparation of a Bacterium septicemiae hemor- rabbiVs liver. rhagicae for this organism. Hutyra has found a filterable virus in the blood and other parts of pigs suffering with Schiveincseuche. The possibility of a mixed infection in this case is not excluded. Other European observers have reported similar findings. The bacterium of swine plague and its varieties have not been systematically studied and classified. It has already. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrati
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