Serological survey in wild boar (Sus scrofa) in Switzerland and other European countries: Sarcoptes scabiei may be more widely distributed than previously thought

• DOI: 10.1186/s12917-018-1430-3
• Publication Date: 2018-04-04T03:40:59Z
• Authors: Chloé Haas; Francesco C. Origgi; Sophie Rossi; Jorge R. López-Ol...; Luca Rossi; Raquel Castillo-C...; Anna Malmsten; Anne-Marie Dalin; Riccardo Orusa; Serena Robetto; Luciano Pignata; Santiago Lavín; Marie-Pierre Ryse...
• Keywords: Wild boar; Mange; Seroprevalence; Sarcoptes scabiei

Sarcoptic mange has recently emerged in wild boar Switzerland, raising the question of origin infection. The main aim this study was to assess extent exposure populations Sarcoptes scabiei prior and after detection cases, determine whether mite been introduced into concerned. We performed a serological survey using commercially available ELISA 1056 archived blood samples free-ranging from Switzerland. To facilitate interpretation obtained data, we additionally estimated seroprevalence four other European countries (1060 samples), both areas with confirmed clinical cases without reported boar. Lastly, revised evaluation commercial when used sera. Seropositive reactions were observed for all five 15 16 areas. apparent seroprevalences ranged 0.0% (0/82; 95% confidence interval [CI]: 0.0–4.4) 17.4% (8/46; CI: 7.8–31.4). Wild known those ≤60 kg times more likely be seropositive than > 60 kg, respectively. Optical density values did not differ between two types among but significantly lower seronegative cases. No difference sampling periods specificity 96.8% (984/1017; 95.5–97.7) history considered truly negative. Seropositivity S. is frequent occurs over larger geographic range expected. Data suggest that parasite endemic within Switzerland its presence necessarily associated disease occurrence. Extrinsic factors which trigger emergence infected remain investigated. applied represents promising tool future studies.