Oral immunisation of wild boar against classical swine fever: evaluation of the first field study in Germany.

The effectiveness of oral immunisation of wild boar against classical swine fever (CSF) was studied in a field trial in Lower Saxony for two years, from 1993 to 1995. This field study was performed in an area of ca. 270 km(2)50% of young boars did not feed on vaccine baits nor become immunised. Therefore, an intensive hunting of this age group is a necessary adjunct to the use of oral vaccination. After the third immunisation period, no virus was detected in the areas where oral immunisation took place.