Zoonotic infection with Onchocerca dewittei japonica in an 11-year-old boy in Kansai Region, Western Honshu, Japan

Uni, S. and Fukuda, M. and Ogawa, K. and Lim, Yvonne Ai Lian and Agatsuma, T. and Bunchom, N. and Saijuntha, W. and Otsuka, Y. and Bhassu, Subha and Mat Udin, A.S. and Zainuri, N.A. and Omar, Hasmahzaiti and Nakatani, J. and Matsubayashi, M. and Maruyama, H. and Ramli, Rosli and Sofian-Azirun, Mohd and Takaoka, Hiroyuki (2017) Zoonotic infection with Onchocerca dewittei japonica in an 11-year-old boy in Kansai Region, Western Honshu, Japan. Parasitology International, 66 (5). pp. 593-595. ISSN 1383-5769, DOI https://doi.org/10.1016/j.parint.2017.06.006.

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Official URL: http://dx.doi.org/10.1016/j.parint.2017.06.006


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.

Item Type: Article
Funders: Ministry of Higher Education, Malaysia (FRGS FP020-2012 for SU), JSPS KAKENHI (Grant No. 15K07781 for MF)
Uncontrolled Keywords: Emerging infectious disease; Filarial parasite; Japanese wild boar; Onchocercosis; Transverse ridges; Vector-borne disease
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 03 Aug 2017 06:59
Last Modified: 31 May 2019 05:31
URI: http://eprints.um.edu.my/id/eprint/17590

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