Separate groups of gerbils were immunized with purified recombinant proteins singly or in combinations and animals were then challenged with N. caninum. The protective efficacy of each vaccination was determined by assessing animal survival rate. The highest protection efficacy was observed for combined vaccination with NcSRS2 and NcDG1 (67.5% survival) compared to control (17.4% survival). Vaccination with NcDG1 alone elicited 62.5% survival in the challenge model (Cho et al., 2005).
Cho et al., 2005: Cho JH, Chung WS, Song KJ, Na BK, Kang SW, Song CY, Kim TS. Protective efficacy of vaccination with Neospora caninum multiple recombinant antigens against experimental Neospora caninum infection. The Korean journal of parasitology. 2005; 43(1); 19-25. [PubMed: 15793355].