Parasitology international · 2017
Zoonotic infection with Onchocerca dewittei japonica in an 11-year-old boy in Kansai Region, Western Honshu, Japan.
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Uni Shigehiko, Fukuda Masako, Ogawa Kou, Lim Yvonne Ai-Lian, Agatsuma Takeshi, Bunchom Naruemon, Saijuntha Weerachai, Otsuka Yasushi, Bhassu Subha, Mat Udin Ahmad Syihan, Zainuri Nur Afiqah, Omar Hasmahzaiti, Nakatani Jun, Matsubayashi Makoto, Maruyama Haruhiko, Ramli Rosli, Azirun Mohd Sofian, Takaoka Hiroyuki
Аннотация
An 11-year-old boy living in Otsu City, Shiga Prefecture, Kansai Region, Western Honshu, Japan had zoonotic onchocercosis. The patient developed a painful swelling on the little finger of his left hand. The worm detected in the excised mass had external transverse ridges but did not have inner striae in the cuticle. On the basis of the parasite's histopathological characteristics, the causative agent was identified as a female Onchocerca dewittei japonica (Spirurida: Onchocercidae). The species of the filarial parasite was confirmed by sequencing the cox1 gene of the parasite. The Japanese wild boar Sus scrofa leucomystax is a definitive host for O. dewittei japonica, which is then transmitted by blackflies as the vector to humans. The current case described occurred in the Kansai Region, Western Honshu, where such infections were previously not reported.