The immune modulation of Bacillus cereus var. Toyoi in mice immunized with experimental inactivated Bovine Herpesvirus Type 5 vaccine

► The probiotic Bacillus cereus var. Toyoi enhance humoral and cellular immune response against vaccinal antigen. ► Supplementation of vaccinated mice against inactivated BoHV-5 with Bacillus cereus var. Toyoi induces a Th1 response. ► This probiotic can improve vaccine efficacy that rely on a cell-mediated immune response.