A serological survey of wild boar in Serbia for Mycoplasma hyopneumoniae and Actinobacillus pleuropneumoniae

and are causative agents of the porcine respiratory disease complex. However, information on the prevalence of these pathogens in wild boars is scarce. This study aimed to investigate the presence of antibodies to and in wild boars in Serbia. In this study 253 serum samples from wild boars were tested for antibodies to and using the ELISA assay. The overall seroprevalence rates of and were 4.2% and 56.9%, respectively. Antibodies to both pathogens were detected in 20 sera samples (7.9%). The prevalence of wild boars that were seropositive for differed with age and ranged from 10.7% to 33.3%, and for it ranged from 51.8% to 83.3%. Wild boars are hard to control and are considered a high-risk infection source for outdoor and backyard pigs and eventually for commercial indoor farms as well. Thus, the result of this first serosurvey in Serbia should raise awareness of the importance of wild boars as potential reservoirs of bacterial pathogens such as and . Our data revealed the circulation of both pathogens in wild boars in Serbia, drawing attention to the potential health risk they present for domestic swine health.