[A hemagglutination inhibition test for control of the quality and effectiveness of highly-purified C. chauvoei toxoid vaccine].

To control quality and efficiency of a highly purified C. chauvoei vaccine which has been developed in Göttingen a haemagglutination-inhibition test is presented. Laboratory and field trials did demonstrate the value of the test. Vaccinated guinea pigs which presented positive HIT titers survived the challenge. Cattle, vaccinated with the vaccine in Germany, Madagascar and Mexico showed positive titers which could be boostered through repeated vaccination.