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Chai J.-Y.,Seoul National University | Sohn W.-M.,Gyeongsang National University | Na B.-K.,Gyeongsang National University | Yong T.-S.,Yonsei University | And 5 more authors.
Korean Journal of Parasitology

A survey was performed to investigate the infection status of freshwater fish with zoonotic trematode metacer-cariae in Phnom Penh and Pursat Province, Cambodia. All collected fish with ice were transferred to our laboratory and examined using the artificial digestion method. In fish from Phnom Penh, 2 kinds of metacercariae (Opisthorchis viverrini and Haplorchis yokogawai) were detected. O. viverrini metacercariae were positive in 37 (50.0%) of 74 fish in 11 species (average no. metacercariae/fish, 18.6). H. yokogawai metacercariae were detected in 23 (57.5%) of 40 fish in 5 species (average no. metacercariae/fish, 21.0). In fish from Pursat Province, 5 kinds of metacercariae (O. viverrini, H. yokogawai, Haplorchis pumilio, Centrocestus formosanus, and Procerovum sp.) were detected; O. viverrini metacercariae (n = 3) in 2 fish species (Henicorhynchus lineatus and Puntioplites falcifer), H. yokogawai metacercariae (n = 51) in 1 species (P. falci-fer), H. pumilio metacercariae (n= 476) in 2 species (H. lineatus and Pristolepis fasciata), C. formosanus metacercariae (n = 1) in 1 species (H. lineatus), and Procerovum sp. metacercariae (n = 63) in 1 species (Anabas testudineus). From the above results, it has been confirmed that various freshwater fish play the role of a second intermediate host for zoonotic trema-todes (O. viverrini, H. yokogawai, H. pumilio, C. formosanus, and Procerovum sp.) in Cambodia. © 2014, Korean Society for Parasitology and Tropical Medicine. Source

Lee Y.-H.,Chungnam National University | Jeong H.G.,Korea Association of Health Promotion | Kong W.H.,Korea Association of Health Promotion | Lee S.-H.,Korea Association of Health Promotion | And 6 more authors.
PLoS Neglected Tropical Diseases

Schistosomiasis remains a major public health concern in Sudan, particularly Schistosoma haematobium infection. This study presents the disease-reduction outcomes of an integrated control program for schistosomiasis in Al Jabalain locality of White Nile State, Sudan from 2009 through 2011.The total population of the project sites was 482,902, and the major target group for intervention among them was 78,615 primary school students. For the cross-sectional study of the prevalence, urine and stool specimens were examined using the urine sedimentation method and the Kato cellophane thick smear method, respectively. To assess the impacts of health education for students and a drinking water supply facility at Al Hidaib village, questionnaire survey was done.The overall prevalence for S. haematobium and S. mansoni at baseline was 28.5% and 0.4%, respectively. At follow-up survey after 6–9 months post-treatment, the prevalence of S. haematobium infection was reduced to 13.5% (95% CI = 0.331–0.462). A higher reduction in prevalence was observed among girls, those with moderately infected status (around 20%), and residents in rural areas, than among boys, those with high prevalence (>40%), and residents in urban areas. After health education, increased awareness about schistosomiasis was checked by questionnaire survey. Also, a drinking water facility was constructed at Al Hidaib village, where infection rate was reduced more compared to that in a neighboring village within the same unit. However, we found no significant change in the prevalence of S. mansoni infection between baseline and follow-up survey (95% CI = 0.933–6.891).At the end of the project, the prevalence of S. haematobium infection was reduced by more than 50% in comparison with the baseline rate. Approximately 200,000 subjects had received either praziquantel therapy, health education, or supply of clean water. To consolidate the achievements of this project, the integrated intervention should be adapted continuously. © 2015 Lee et al. Source

Chai J.-Y.,Seoul National University | Sohn W.-M.,Gyeongsang National University | Yong T.-S.,Yonsei University | Eom K.S.,Chungbuk National University | And 5 more authors.
Korean Journal of Parasitology

Echinostome eggs were detected in 22 (1.1%) of 2,074 people residing in riparian villages along the Mekong River in Khammouane Province, Lao PDR. In order to recover the adult flukes, 9 persons were treated with praziquantel and purged with magnesium salts. A total of 55 echinostome specimens (4 species) were recovered from the 9 persons. Echinostoma revolutum (8 specimens) was recovered from 3 persons, Artyfechinostomum malayanum (8 specimens) was from 2 persons, Echinochasmus japonicus (33 specimens) was from 7 persons, and Euparyphium sp. (6 specimens) was from 1 person. In Lao PDR, only human infections with E. japonicus were previously known. Therefore, the present study describes human infections with E. revolutum, A. malayanum, and Euparyphium sp. for the first time in Lao PDR. These results indicate that the surveyed villages of Khammouane Province, Lao PDR are low-grade endemic foci of echinostomiasis. © 2012, Korean Society for Parasitology. Source

Yoo S.,Seoul National University | Kim H.,Korea Association of Health Promotion | Cho H.-I.,Korea Association of Health Promotion
Asia-Pacific Journal of Public Health

The present study investigated the prevalence of obesity and the associated health conditions of multiethnic Asian female immigrants in Korea. Data were collected from 2246 immigrant wives in 7 largest ethnic groups in a national health examination program. The mean body mass index was 21.9 ± 3.3 kg/m2. Prevalence of obesity (body mass index ≥25 kg/m2) among immigrant women was 15.4%. Age-adjusted prevalence of obesity varied among groups by native country (from 10.4% for Japanese to 36.3% for Thai women). The likelihood of obesity significantly increased with years of residence in Korea (odds ratio [OR] = 1.44 for 5.0-9.9 years; 1.85 for ≥10 years), physical inactivity (OR = 1.84), and eating spicy and/or salty food (OR = 1.45). Prevalence of chronic health conditions also differed by country of origin. Significant associations were observed between obesity and elevated blood pressure (OR = 1.87), obesity and elevated cholesterol level (OR = 2.83), and obesity and prediabetes/diabetes (OR = 2.44) after adjusting for age, country of origin, and years of residence in Korea. © 2012 APJPH. Source

Rim H.-J.,Korea University | Sohn W.-M.,Gyeongsang National University | Yong T.-S.,Yonsei University | Eom K.S.,Chungbuk National University | And 6 more authors.
Korean Journal of Parasitology

Fishborne trematode (FBT) metacercariae were investigated in fish from 3 Provinces of Lao PDR. Total 242 freshwater fish of 40 spechies were collected in local markets of Luang Prabang (59 fish of 16 species), Khammouane (81 fish of 19 species), and Saravane (97 fish of 14 species), and each of them was examined by artifcial digestion method. Four species of metacercariae (Opisthorchis viverrini, Haplorchis taichui, Haplorchis yokogawai, and Centrocestus formosanus) were detected. O. viverrini was detected in 35 fish (14.5%), and their density was 252 per infected fish (Luang Prabang, 88 metacercariae in 5 fish; Khammouane, 187 in 6 fish; Saravane, 303 in 24 fish). H. taichui was found in 102 fish (42.1%), and their density was 485 per infected fish (Luang Prabang, 260 metacercariae in 38 fish; Khammouane, 1,084 in 23 fish; Saravane, 359 in 41 fish). H. yokogawai was detected in 92 fish (38.0%), and their density was 222 per infected fish (Luang Prabang, 362 metacercariae in 17 fish; Khammouane, 126 in 20 fish; Saravane, 214 in 55 fish). Metacercariae of C. formosanus were found in 8 fish (3.3%), and their density was 3 per infected fish. In the present study, it has been confrmed that FBT metacercariae, in particular, H. taichui, H. yokogawai, and O. viverrini, are highly prevalent in fish from Luang Prabang, Khammouane, and Saravane Province, Lao PDR. © 2013, Korean Society for Parasitology and Tropical Medicine. Source

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