Figure 4From: Bovine viral diarrhea virus in free-ranging wild ruminants in Switzerland: low prevalence of infection despite regular interactions with domestic livestockInteractions between red deer and cattle in Graubünden, Switzerland. (A) Encounter of < 50 m between cattle and red deer. (B) Red deer aggregation in relationship with anthropogenic food resources, here the use of hay silage for livestock in winter. Courtesy of Martin Michael.Back to article page