HOW DOUBLE TREATMENT IS GIVEN 401 



to use a little common sense and diplomacy in dealing with these 

 cases, and not try to force your ideas down the throat of another 

 man without first giving him a chance to get an understanding of 

 the matter. Get the confidence of the man, and you will not be 

 long in winning him to your point of view. 



When Serum Alone is Indicated. — While I am personally in 

 favor of using the double method of treatment in all cases where it 

 is possible, yet it is not the indicated method of treatment in all 

 cases. There are instances where the single method should be used, 

 and in these cases the results are usually the same as in the use of 

 the double method. 



As has already been explained, when the single or serum-alone 

 method of treatment is used we simply place in the body the germ- 

 fighting bodies which enable the animal to fight off an attack by the 

 germs of cholera. If these germs are actually present, and really 

 attack the animal, the result is the same as where the double 

 method of treatment is used. These germs, while prevented from 

 causing disease owing to the presence of the germ destroyers con- 

 tained in the serum, do attack the cells, and they quickly learn the 

 art of preparing the germ fighters. In this way the same results 

 are accomplished as if the germs had been injected at the time the 

 serum was given. 



Another class of cases in which the single method of treatment 

 can be successfully used is in those cases where unprotected hogs 

 are to be placed in an infected feed lot. For instance, if a farmer 

 has had an outbreak of cholera on his farm, and the feed lots have 

 been entirely cleaned out of hogs, these feed lots still contain the 

 germs of cholera, and if new animals, which have not been protected 

 by vaccination, are placed in these same lots they will very quickly 

 take the disease and die. 



In case you are called upon to treat a herd of this kind that is 

 about to be or has already been placed in an infected feed lot, it 

 will usually be sufficient to simply give serum alone. The germs 

 are already present in the feed lot, and will generally be taken up 

 by the animal in sufficient numbers to produce the same type of 

 reaction in the body as if they had been injected at the same time 

 the serum was given, as is the case where the double treatment is 

 given. The better method, however, is to give the double injec- 



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