SEROPREVALENCE OF ORTHOPOX VIRUS-SPECIFIC ANTIBODIES IN RED FOXES (VULPES-VULPES) IN THE FEDERAL STATE BRANDENBURG, GERMANY

The prevalence of orthopox virus (OPV)-specific antibodies in 1,040 re d foxes (Vulpes vulpes) was evaluated on a large scale in the German F ederal State Brandenburg. Serum samples were selected from 809 communi ties within the study area from January 1991 to September 1994 by simp le random sampling. Screening was carried out by an indirect enzyme-li nked immunosorbent assay (ELISA). Orthopox virus-specific antibodies w ere found in 162 (16%) of the 1,040 fox sera. Furthermore 154 (15%) se ra were considered suspect positive. The specificity of the antibodies detected in ELISA-positive and suspect positive sera was confirmed by Western blotting. Presence of OPV-antibodies occured in 291 communiti es. No correlation of OPV-antibodies findings to latitude or character istic topographical and ecological peculiarities of the study area nas found. Although the causative agent is still unknown we believe that orthopox viruses probably have a ubiquitous presence among red foxes.