• Parasites, Hosts and Diseases
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• v.56 no.5
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• pp.495-500
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• 2018

Trichuris suis infection in pigs is ubiquitous in intensive and extensive farms, which causes potential threat to human health. The objective of this research was to investigate the prevalence of T. suis in pigs in Hunan province. Total 2,267 fresh fecal samples distributed in 28 pig farms from 7 different administrative regions (Hunan province) were evaluated for the existence of T. suis eggs using saturated NaCl floating method. The average infection rate of T. suis in pigs was 8.91% in Hunan province. To determine genetic variation of the gained T. suis isolates in the present study, the internal transcribed spacer (ITS) regions from nuclear ribosomal DNA (rDNA) of 7 T. suis isolates were cloned and analyzed. Nucleotide diversities were 1.0-3.5% and 0-3.8% for ITS-1 and ITS-2, respectively. Phylogenetic analyses indicated that all isolates collected in the present study and T. suis available in Genbank generated a monophyletic clade. The present investigation revealed high infection rates of T. suis in pigs in Hunan province, which shed light on making effective measures to prevent and control T. suis infection in pigs in Hunan province.

• Journal of Nutrition and Health
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• v.49 no.1
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• pp.8-17
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• 2016

Purpose: The aim of this study is to summarize and report on the change of food allergy in elementary school students and perception and practices in school nutritionists in Korea from 1995 to 2015. Methods: The search strategy was "(food allergy AND elementary school AND Korea) AND (nutritionist OR perception OR practice)". The search was conducted via KISS, DBPIA, RISS, NDSL, PubMed, Scopus, and Google scholar and full text and abstracts on the topic of food allergy evaluating prevalence, allergen, symptom, perception and practices were included in this review. Results: Out of 1379 records found in the sources, 13 related studies were included in the final analysis. The results showed that the number of students who had experienced food allergy was increasing. The two frequent allergenic foods were eggs and milk. The perception and practices of food allergy in school nutritionists was gradually increased. Conclusion: Further objective evaluations are required to confirm the food allergy status and its management in school.

• The Korean Journal of Cytopathology
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• v.4 no.2
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• pp.176-180
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• 1993

Clonorchiasis is common in Korea. The coinfection of amebic abscess with clonorchiasis is not rare in endemic areas. The coinfection may influence on its manifestations each other. We experienced a human case with unusal manifestation of amebic liver abscess associated with coinfection by Clonorchisis sinensis. The case was an 80-year-old female. She lived in Yongil-gun, Kyongsangbuk-do, Korea, She had multiple amebic abscess cavities in the liver, one of which subsided spontaneously and others newly appeared. She was diagnosed by CT guided aspiration of the cyst, which revealed trophozoites of ameba and eggs of C. sinensis. She was treated with praziquantel and metronidazale and was cured.

• Asian-Australasian Journal of Animal Sciences
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• v.21 no.11
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• pp.1680-1688
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• 2008

Development of village chicken production can be a sustainable way of helping to meet the welfare needs of rural populations and raise their living standards. There is a dearth of information on research conducted to characterize, understand and develop the village chicken production systems in Zimbabwe. This review focuses on constraints, opportunities and research needs for the improvement of village chicken productivity in Zimbabwe. Village chicken production in Zimbabwe is extensive and dominated by indigenous chickens that exhibit remarkable adaptation to local environments. The multitude functions of village chickens, which include the provision of high quality protein meat and eggs, cash through sales and socio-cultural roles, are discussed in detail. Human gender aspects in village chicken production are highlighted. The factors that hamper village chicken productivity are reviewed together with opportunities and research needs. The major constraints include shortage of feed, poor health and housing management. Any improvements in these constraints may lead to sustainable increase in village chicken productivity.

• Parasites, Hosts and Diseases
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• v.48 no.3
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• pp.253-257
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• 2010

Two adult rock partridges raised in a city zoo were examined parasitologically and pathologically. Two distinctive eggs resembling those of Capillaria and Heterakis were detected in the feces. At necropsy, a markedly-dilated duodenum with severe catarrhal exudates, containing adult worms of Capillaria sp. and Heterakis sp. in the cecum, was observed. Male Capillaria had the cloacal aperture extended almost terminally with a small bursal lobe and an unsheathed spicule with transverse folds without spines. Female Capillaria had a vulva that was slightly prominent and slightly posterior to the union of the esophagus and intestine. The esophagus of the adult Capillaria was more than a half as long as the body in the male, but was much shorter in the female. Based on these morphological features, the capillarid nematode was identified as Capillaria obsignata. The male adult worms of Heterakis was identifiable by 2 dissimilar spicules, a unique morphological feature where the right spicule was considerably longer than the left, which is also a characteristic feature of Heterakis gallinarum. This is the first report of concurrent infections with C. obsignata and H. gallinarium in rock partridges.

• Parasites, Hosts and Diseases
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• v.33 no.1
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• pp.61-64
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• 1995

Gymnopholloides seoi, a new intestinal trematode of humans transmitted by oysters on a southwestern island of Korea, dry medical attentions because of its possible relationship with evoking pancreatitis or other pancreatic diseases. We experienced ho interesting cases of G. seoi infection who were accompanied with diabetes mellitus. In routine stool examination, eggs of a gymnophallid were detected from two patients, and after treatment with praziquantel and purgation, 772 and 10 adult flukes were recovered respectively. They were identified as G. seoi The first patient was a 62-year old man who lived in Mokpo, nearby the known endemic area, and the second patient, a 54-year old woman who lived in Inchon. They used to eat raw oysters. It should be ruled out that G. seoi infection has some relationship with pancreatic diseases.

• Parasites, Hosts and Diseases
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• v.56 no.3
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• pp.291-294
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• 2018

Soil-transmitted helminthiases (STH) are now no longer public health problems in the Republic of Korea (South Korea), but their status are unavailable in the residents of North Korea (NK) despite the expectation of large scale traffic and future reunification of the Korean Peninsula. A total of 20 female refugees from NK who had been admitted to the Division of Gastroenterology, Dankook University Hospital, were subjected in this study. Among them, 15 refugees were examined by the colonoscopy and 10 ones were examined with the stool examination (formalin-ether sedimentation). Both diagnostic methods were commonly adopted in 5 patients. Eggs of Trichuris trichiura were detected in 7 out of 10 refugees in the stool examination. In the colonoscopy, T. trichiura worms were found in 6 (40.0%) out of 15 refugees. Total 9 (45.0%) peoples were confirmed to be infected with human whipworms. Additionally, 1 case of clonorchiasis was diagnosed in the stool examination and a worm of Ascaris lumbricoides was discovered from a trichuriasis case. These findings suggested that STH is highly prevalent in NO, in which living conditions are not so good in the aspect of general hygiene and medical care.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.512-512
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• 2000

Some planorbid snails such as Hippeutis cantori and Segmentina hemisphaerula have reported as the molluscan intermediate hosts of Neodiplostomum seoulense, one of important snail-borne human intestinal trematodes in Korea. However, one of the Korean lymnaeid snail species, Austropeplea ollular was also found to be the first intermediate ho of N. seoulense. In field-collected Austropeplea snails from Sorae and Kimpo out of se collected localities, the bifurcated cercariae of N. seoulense were shed (infection rat 0.3%), whereas no Radix auricularia and Fossaria truncatula were found shedding cercariae. Each of 12 tadpoles of Rana nigromaculata, known as the second intermedia host of N. seoulense, were exposed to 200 cercariae shed from field-collected A ollula. F tadpoles of R. nigromaculata were found to be massively infected with metacercariae o N. seoulense (recovery rate: 62.1%). Each of five rats (Sprague-Dowley strain) was or fed with 200 metacercariae, and eggs of N. seoulense were detected in the rat feces on week later. These rats were killed 4 weeks after postinfection and adult worms of N seoulense were recovered from the small intestines (recovery rate: 9%). This is the f report of A. ollula as the first molluscan intermediate host for N. seoulense in Korea.

• Food Science of Animal Resources
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• v.36 no.1
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• pp.100-108
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• 2016

Microbiological contamination of eggs should be prevented in the poultry industry, as poultry is one of the major reservoirs of human Salmonella. ClO₂ gas has been reported to be an effective disinfectant in various industry fields, particularly the food industry. The aims of this study were to evaluate the antimicrobial effect of chlorine dioxide gas on two strains of Salmonella inoculated onto eggshells under various experimental conditions including concentrations, contact time, humidity, and percentage organic matter. As a result, it was shown that chlorine dioxide gas under wet conditions was more effective in inactivating Salmonella Enteritidis and Salmonella Gallinarum compared to that under dry conditions independently of the presence of organic matter (yeast extract). Under wet conditions, a greater than 4 log reduction in bacterial populations was achieved after 30 min of exposure to ClO₂ each at 20 ppm, 40 ppm, and 80 ppm against S. Enteritidis; 40 ppm and 80 ppm against S. Gallinarum. These results suggest that chlorine dioxide gas is an effective agent for controlling Salmonella, the most prevalent contaminant in the egg industry.

• Parasites, Hosts and Diseases
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• v.23 no.2
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• pp.230-235
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• 1985

The metacercariae of an echinostomatid fluke were detected from a freshwater 6sh, Odontobutis obscura interrupta caught from the Seom river system, Wonseong-gun, Kangwon-do, and experimentally infected into rats to obtain the adult worms for the species identification. A total of 32 metacercariae was detected from 10 fishes (27.8%) out of 36 O. obscura interrupta caught from the river. The average size of metacercariae was $153.4{\times}149.0{\;}{\mu}{\textrm{m}}$. Also, it was uniquely specific that thickened membrane was formed around the metacercarial cyst wall. The rats orally infected with those metacercariae were sacrificed 20 days after infection to get the adult worms. The mean length and width of the adult worms were 0.75 cm and 0.13 cm, respectively. The number of collar spines on circumoral disk was 26 to 28, and the end group spines at lateral sides of the oral sucker were 4 on each side. The echinostomatid flukes observed in this study were all identified as Echinostoma hortense according to the morphologies of the cirrus sac, ovary, vitellaria and testes of the adult worms and the shape of eggs. On the other hand, O. obscura interrupta is one of the fresh-water fish that are preferably eaten raw by the rural inhabitants. Although no human case of 5. hortense infection by eating O. obscura interrupta has been experienced yet, the possibility is strongly suggested in this study.