20 



The Bulletin 



The Serum Simultaneous jNIethod consists of injecting the serum as in 

 the Serum Alone Method, but at the same time a small amount of vitus 

 is injected. 



The Serum Alone Method only confers immunity for a very short 

 period, varying from four to eight weeks, whereas the Serum Simul- 

 taneous Method confers immunity, varying from a few months in very 

 young pigs to life immunity in older hogs. 



As- there is considerable danger attached to the Seruui Simultaneous 

 Method, it is not safe to put this method of treatment into the hands of 

 persons who have not had special training for this purpose. This is so 

 because a small per cent of the hogs treated by this method develop hog 

 cholera and die. This is so when the method is applied by men who have 

 had long training and wide experience in using the serum and virus. We 

 think it would be a great mistake to distribute the virus with the serum 



Fig. 11. Injecting serum into armpit 



over the State to any one applying for it. If this was done we would 

 expect to see the entire State sooner or later "fired" with hog cholera. 

 There is no danger of producing hog cholera by using the Serum Alone 

 Method, and for this reason we think it is the oidy melhod In jihice in the 

 hands of the untrained. 



The serum is sent direct to any one ordening it, witli full directions for 

 using. If the directions are followed closely good results will follow. It 

 is always better, whenever possible, to have some one inject the senun wlio 

 has at least seen it injected, if they have not done .so themselves. Our 

 advice would be to employ a graduate vetcriiuirian when ])0ssible and 

 have him inject the scrum for you. 



