THIRTEENTH ANNUAL YEAR BOOK— PART VIII 485 



work. There should not be any abscesses if the serum is well 

 made and properly used. 



"Where could we get a party safe to depend on for this work!" 



Dr. Stange: I don't try to keep track of these firms and we 

 have no check on their work. I generally recommend the state 

 veterinarian. He has an appropriation for producing hog cholera 

 serum for the state of Iowa. Of course the past year he* could 

 liot supply the demand. When a man is doing work for the state 

 that way about his only object is to produce good serum and I 

 have not heard any complaints from the serum produced by the 

 state. 



''Should you advise the breeder to vaccinate a herd that is 

 doing welH" 



Dr. Stange : I never advise anybody to vaccinate unless he is 

 in danger. 



"I have noticed an item about exhibiting at our state fair that 

 they would not allow any swine on the ground that were not vac- 

 cinated. ' ' 



Dr. Stange: I have just heard that and do not know if it is 

 a fact or not. There was some talk last year of forcing every- 

 body to vaccinate. The idea would probably be to give them the 

 serum alone to protect them while they were at the fair. That 

 would protect them for from one to three weeks. 



"Does the state law prohibit the private individual from using 

 the simultaneous method?" 



Dr. Stange : No, I do not think there is anything in the law 

 to that effect. Any individual can send for the serum and use 

 it. I think they advise a man to have a veterinarian do that work 

 l)ecause you are dealing with disease producing material but it is 

 not compulsory. There is nothing about the method but what any 

 intelligent individual can do. Cleanliness is the main part of it 

 and be sure that your serum is injected in sufficient quantities. 



"Is immunity to hog cholera transmitted?" 



Dr. Stange : No, not to any extent. They claim that when the 

 sow is vaccinated in a late stage of pregnancy it is transmitted 

 to some extent. When she has recovered from cholera before she 

 becomes pregnant no immunity is transmitted. 



