RHINISENG® is a vaccine against progressive (PAR) and non-progressive atrophic rhinitis (NPAR) indicated for pregnant sows and gilts to passively protect their offspring. The RHINISENG® recommended vaccination scheme includes a basic vaccination scheme (vaccination 8-6 weeks before farrowing and revaccination 4-3 weeks before farrowing) and a booster dose (4-3 weeks before the subsequent farrowing). This study evaluated the vaccine pre-clinical efficacy and the duration of immunity for active immunization of the sows.
RHINISENG®: Efficacy of the basic vaccination scheme (vaccination and revaccination) and the booster vaccination
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RHINISENG® significantly reduced the atrophic rhinitis lesions reproduced in a severe experimental infection, both after applying the basic vaccination scheme and after boosting during the subsequent gestation (Figure 1), even when sows where vaccinated at the maximum interval
recommended between the basic vaccination scheme and parturition, i.e. 8 and 4 weeks before farrowing.