In this study, the efficacy of successive intranasal (IN)/intramuscular (IM) vaccination against Aujeszky's disease virus (ADV) was assessed in experimental pigs. The double deletion‐mutant Kaplan gE‐gI‐was used for IN vaccination at 4 weeks of age and the commercially available Bartha strain, suspended in an oil‐in‐water emulsion, was used for the IM booster vaccination at 10 weeks of age. Efficacy was compared with that of the traditional double IM vaccination with the commercially available Bartha strain at 10 and 14 weeks of age by challenging the pigs at the end of the fattening period.