[Comparative testing of methods for the control of foot-and-mouth disease vaccines on guinea pigs]

It was found that the so-called direct methods for the control of vaccines give better idea about the immunogenic properties of the F. M. D. vaccines. The direct method for the determination of the value for guinea pigs is to be preferred to the method determining the protection index C, and is convenient, fast and readily applicable in terms of economy and preciseness. Discussed is the problem of employing the method in the research and production activities under laboratory conditions.