Atypical Yersinia pseudotuberculosis serotype O:3 isolated from hunted wild boars in Italy.
Atypical Yersinia pseudotuberculosis serotype O:3 was isolated from rectal contents of two wild boars hunted in Italy within a regional wildlife management program. No outbreak of yersiniosis was reported in this area in the same period and no lesions were found by the veterinarian at post-mortem inspection. Nevertheless, after histological examination, granulomatous lesions were detected in submandibular lymph nodes of one of the two wild boars. Microbiological and bio molecular characterization of the isolates revealed a melibiose-negative, biotype 2, wbyK+O:3 genotype, carrying inv, yop (yopH and yopB), virF, and R-HPI. Strains showing the same profile, matching to the criteria of genetic group 5, have been recently reported in fatal cases of yersiniosis in cynomolgus macaques and in farmed deer and atypical O:3 serotype has been suggested as a pathogenic subtype of O:3. This is the third report of an atypical O:3 Y. pseudotuberculosis strain, the first outside the American continent and the first one not associated to fatal yersiniosis. Wild boars could be a possible reservoir of this emerging pathogen.
Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, via Salvemini, 1, 06126 Perugia, Italy. Electronic address: c.magistrali@izsum.it.
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Magistrali
Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, via Salvemini, 1, 06126 Perugia, Italy.
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Cucco
Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, via Salvemini, 1, 06126 Perugia, Italy.
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Manuali
Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, via Salvemini, 1, 06126 Perugia, Italy.
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Sebastiani
Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, via Salvemini, 1, 06126 Perugia, Italy.
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Farneti
Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, via Salvemini, 1, 06126 Perugia, Italy.
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Ercoli
Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche, via Salvemini, 1, 06126 Perugia, Italy.
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Pezzotti
D000818:Animals; D005838:Genotype; D007558:Italy; D019081:O Antigens / Q000235:genetics; D012703:Serotyping; D034421:Sus scrofa / Q000382:microbiology*; D013552:Swine / Q000382:microbiology*; D013553:Swine Diseases; D037521:Virulence Factors / Q000235:genetics; D015011:Yersinia pseudotuberculosis / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D015012:Yersinia pseudotuberculosis Infections / Q000382:microbiology / Q000662:veterinary*
D019081:O Antigens; D037521:Virulence Factors
Atypical; Virulence; Wild boars; Yersinia pseudotuberculosis