Resultaterne af undersøgelserne viste, at vaccination med Ibraxion hos kalve, der enten var ældre end 3- 4 måneder (hvis de havde antistoffer mod IBR, som var blevet overført fra moderen) eller over 2 uger gamle (hvis de ikke havde antistoffer fra moderen), ydede beskyttelse mod IBR i 6 måneder.
The results of the trials showed that vaccination by Ibraxion of calves either not less than 3 to 4 months of age (if they have antibodies to IBR that have been passed on from their mother) or from 2-week of age (if they have no maternal antibodies). provided protection from IBR for six months.