title: An Onchocerca species of wild boar found in the subcutaneous nodule of a resident of Oita, Japan.
abstract: Histological examination and dissection of a subcutaneous nodule removed from the right infraclavicular region of a 69-year-old woman from Oita, Kyushu, Japan, revealed a young female of Onchocerca dewittei japonica, a common parasite of wild boar in the Oita region. Distinctive morphologic characteristics of this Onchocerca species include the thick cuticle with very prominent and straight transverse ridges overlapping at the lateral sides, the lack of inner striae (scalloping) of the inner cuticle layer, the dorso-ventral symmetry, and the thick somatic muscles. Jointed with previous reports in the past decade, this case confirms the occasional transmission of the parasite from wild boar to humans in Oita.
authors.affiliation: Department of Infectious Disease Control, Faculty of Medicine, Oita University, Hasama-cho, Oita 879-5593, Japan. takaoka@med.oita-u.ac.jp
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Takaoka
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Yanagi
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Daa
authors.forename: Saburo
authors.initials: S
authors.lastname: Anzai
authors.forename: Chiharu
authors.initials: C
authors.lastname: Aoki
authors.forename: Masako
authors.initials: M
authors.lastname: Fukuda
authors.forename: Shigehiko
authors.initials: S
authors.lastname: Uni
authors.forename: Odile
authors.initials: O
authors.lastname: Bain
mesh_terms: D000368:Aged; D000818:Animals; D002417:Cattle; D005260:Female; D006801:Humans; D007564:Japan; D009854:Onchocerca / Q000302:isolation & purification*; D009855:Onchocerciasis / Q000469:parasitology / Q000635:transmission / Q000662:veterinary; D012867:Skin / Q000469:parasitology*; D034421:Sus scrofa / Q000469:parasitology*; D013553:Swine Diseases / Q000469:parasitology / Q000635:transmission*; D015047:Zoonoses / Q000469:parasitology / Q000635:transmission*