hog, cholera, disease, animal husbandry department
Cooperative Extension Service, South Dakota State College of Agriculture and Mechanic Arts
Hog cholera is a highly contagious disease of swine only causing peculiar and characteristic symptoms, resulting in death, and is caused by a virus. The disease has existed in the United States for 91 years, the first known outbreak occurred in the southwestern section of Ohio in 1823. Probably it was imported into this country as a great many of the diseases have been. It gradually spread to neighboring states and inasmuch as nothing was done to control it, the disease has now spread to every hog-raising state in the union. In South Dakota more or less hog cholera exists continuously. The disease seems to run in cycles, and we have a lot of hog cholera some years and then it seems to run out to a certain extent and then alter on starts up again. This disease causes a loss to the extent of $75,000,000 a year and is the most important disease from an economic standpoint with which the hog industry has to contend.
Weaver, Gilbert S., "Hog Cholera" (1924). SDSU Extension Circulars. 205.