Twelve commercial vaccines against clostridiosis commercialized in Brazil which have in their composition Clostridium sordellii were evaluated for efficacy. A standard monovalent bacterin was used as a reference test. Two of the tested vaccines (16.6%), codified as T6 and T8, gave the same results as the standard bacterin, protecting all the challenged animals. One vaccine (8.3%), codified as T10, after being retested was considered efficient. The remaining vaccines (75%), codified as T1, T2, T3, T4, T5, T7, T9, T11 and T12, were considered inefficient.
clostridiosis; vaccine; Clostridium sordellii
