title: Ancylostoma ceylanicum hookworm infection in Japanese traveler who presented chronic diarrhea after return from Lao People's Democratic Republic.
abstract: Ancylostoma (A.) ceylanicum, one of the most common species of hookworms infecting dogs and cats, also causes patent infections in humans and is now considered to be the second most common hookworm species infecting populations in southeast Asia. A Japanese patient who returned from a visit to Thailand and Lao People's Democratic Republic (PDR) was presented with intermittent watery diarrhea with eosinophilia. Hookworm eggs were found in feces samples, and adult worms were confirmed to be present in the jejunum with capsule endoscopy and double balloon enteroscopy. A diagnosis of A. ceylanicum infection was made based on the morphology of the adult worms along with findings of a PCR-based molecular study using larvae obtained from a fecal sample culture. The infection was considered likely to have been obtained during a 1-month stay in a Laotian village, where the patient had eaten local food, worn sandals on bare feet, and lived as a local native villager, though he had stayed in modern hotels during the visit to Thailand.
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kaya
authors.affiliation: Department of Pathogen, Infection and Immunity, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan. Electronic address: myoshika@naramed-u.ac.jp.
authors.forename: Masahide
authors.initials: M
authors.lastname: Yoshikawa
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Toshiya
authors.initials: T
authors.lastname: Nakatani
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Fumimasa
authors.initials: F
authors.lastname: Tomo-Oka
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Fujimoto
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Ishida
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Yukihisa
authors.initials: Y
authors.lastname: Fujinaga
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Aihara
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Shinsaku
authors.initials: S
authors.lastname: Nagamatsu
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Eijo
authors.initials: E
authors.lastname: Matsuo
authors.affiliation: Department of Parasitology, Graduate School of Medical Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8641, Japan.
authors.forename: Masaharu
authors.initials: M
authors.lastname: Tokoro
authors.affiliation: Department of Pathogen, Infection and Immunity, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
authors.forename: Yukiteru
authors.initials: Y
authors.lastname: Ouji
authors.affiliation: Department of Gastroenterology, Nara Prefecture General Medical Center, 1-30-1 Hiramatsu-cho, Nara 631-0846, Japan.
authors.forename: Eiryo
authors.initials: E
authors.lastname: Kikuchi
mesh_terms: D000722:Ancylostoma / Q000235:genetics / Q000302:isolation & purification*; D000724:Ancylostomiasis / Q000175:diagnosis* / Q000188:drug therapy* / Q000469:parasitology; D000818:Animals; D000969:Antinematodal Agents / Q000627:therapeutic use*; D053704:Capsule Endoscopy; D002415:Cats; D004285:Dogs; D058582:Double-Balloon Enteroscopy; D004802:Eosinophilia / Q000469:parasitology; D005243:Feces / Q000469:parasitology; D006801:Humans; D007564:Japan; D007812:Laos; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011716:Pyrantel Pamoate / Q000627:therapeutic use*; D014195:Travel
chemical_list: D000969:Antinematodal Agents; D011716:Pyrantel Pamoate
keywords: Ancylostoma ceylanicum; Emerging disease; Hookworm; Zoonosis