Many years of research and observations on bait uptake, efficacy, behavioural studies of foxes, reduction and elimination of rabies, population dynamics of foxes following oral vaccination, as well as annual exchanges of researchers' experiences, formed the scientific background for field trials extending over many years. These are the most extensive field studies for the testing of a rabies vaccine so far. The use of the techniques and strategies of oral immunisation of foxes against rabies using SAD B19 can eliminate wildlife rabies among foxes and raccoon dogs, as European experience has shown. The disease then also disappears completely in domestic animals and man.