Megumi SatoTippayarat YoonuanSurapol SanguankiatSupaporn NuamtanongTiengkham PongvongsaInthava PhimmayoiVilayphone PhanhananBoungnong BouphaKazuhiko MojiJitra WaikagulUniversidade Federal do TocantinsMahidol UniversityStation of MalariologyMinistry of HealthNational Institutes for the Humanities, Research Institute for Humanity and Nature2018-05-032018-05-032011-01-01American Journal of Tropical Medicine and Hygiene. Vol.84, No.1 (2011), 52-54000296372-s2.0-79952253244https://repository.li.mahidol.ac.th/handle/20.500.14594/12102In Lahanam Village, Savannakhet Province, Laos, 125 of 253 villagers (49.4%) were found by fecal examination to harbor hookworm eggs. The eggs were heterogeneous in morphology and size, suggesting infections of mixed nematode species. To confirm the hookworm egg species, on a voluntary basis, 46 hookworm egg-positive participants were treated with albendazole, and post-treatment adult worms were collected from purged fecal samples. The common human hookworm was found in only 3 participants; 1 case of Necator americanus, and 2 cases of Ancylostoma duodenale. In contrast, adult Trichostrongylus worms were expelled from most participants (43 of 46, 93.5%). The Trichostrongylus species were confirmed by morphology and internal transcribed spacer 2 sequences; all worms were of the same species (T. colubriformis). In addition, some Trichostrongylus worms were obtained from a goat in the same village and identified as T. colubriformis. The results suggested that T. colubriformis was the main zoonotic species causing hookworm infections in the village. Copyright © 2011 by The American Society of Tropical Medicine and Hygiene.Mahidol UniversityImmunology and MicrobiologyMedicineArticleSCOPUS10.4269/ajtmh.2011.10-0385