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[Relations between fox populations and halting the rabies in North Rhine-Westphalia].

Since Sylvatic rabies started in North Rhine-Westphalia in 1953 many epidemics have occurred, only in mid-mountain areas. As a characteristic, epidemics halted, in each case at the limit between big game (in south-east) and small game (in the north-west) hunting areas. The fact that rabies died out when reaching these limits is surprising for, according to the number of foxes killed in small game hunting areas, there was a fox density which usually does not allow the epidemic to stop. Explanation of this phenomenon could be the different hunting methods. Indeed in small game hunting areas 80%