INFECTIOUS DISEASES 



189 



fatal and has a tendency to become chronic, the course in 

 such cases varying from one week to two or three months. 

 Treatment. It is probable that more proprietary 

 remedies have been devised and advertised as hog-cholera 

 cures than for any other disease of domesticated animals. 

 The application of therapeutic agents other than anti- 

 hog-cholera serum has not proved satisfactory in any 

 proved outbreak of cholera. 



Fig. 18. LYMPH NODES. 

 A. Normal. B. hyperemic due to hog cholera. 



With this disease, as with any other, prevention is 

 far better than treatment of afflicted animals. It is a 

 preventable disease, but unfortunately it has been re- 

 sponsible for extensive losses of swine for so many years, 

 in practically every country, that the swine breeders 

 and swine raisers have apparently become accustomed to 

 the losses and accept them as a matter of fact, and until 

 recently with little concern as to methods of prevention. 

 The prevention of hog cholera may be accomplished by 



