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Fig. 2 | BMC Veterinary Research

Fig. 2

From: A serological survey of pathogens associated with the respiratory and digestive system in the Polish European bison (Bison bonasus) population in 2017–2022

Fig. 2

The risk of Bluetongue virus (BTV) antibodies occurrence, evaluated using commercial ELISA, in European bison in: A) all analyzed animals, B) animals in Białowieska and Knyszyńska forests, C) animals in Bieszczady and Borki forest and D) animals in enclosures. Within populations with high prevalence (Białowieska and Knyszyńska forests), a similar increased risk of seropositivity i.e. over 50%, was observed at an age of 10 years. In the low-risk free-ranging populations (Bieszczady and Borecka forest) and in enclosures, no significant elevation in the risk of BTV antibodies occurrence was observed with age

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