Indirect fluorescent antirabies technique (IFRA) in bovine serum. II — Comparison of the results obtained with IFRA and serum-neutralization test

Abstract

There were test 125 bovine blood samples by the SN and IFRA techniques, among them 68 were positives and 47 negatives to both and 15 were positives so IFRA and negatives to SN. The statistical analysis of the results revealed: 1. A significant positive association between the results obtained of both techniques, analysis by the Yule association coefficient (Q = 1 ); 2. The agreement of the antibodies title was good and the IFRA seems so be more sensitive than the SN, based on the 15 serums that were positive to IFRA and negative to SN. These 15 serums samples bellows to vaccinated animals; 3. The correlation among the titles was low (0,33) but it was positive and significant at the level of rejection of the null hypothesis that was fixed at 5%. This low value is probably due to the different nature of the antibodies measured by the two studied techniques considering too the highest sensibility of the IFRA.