• Journal of Korea Association of Health Promotion
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• v.3 no.2
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• pp.172-180
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• 2005

A small scale survey on intestinal parasitic infections was investigated by subjecting residents of North Korea to recommend a plausible control strategy. The Kato-Katz method was applied to 235 residents in a borderline city and 46 in a refugee camp in borderline China. Only eggs of Ascaris and Trichuris were detected in 41.1% and 37.6% respectively but most of them were light infected. Females were infected in 61.2% while 53.1% males were egg positive. By age, residents in their 30s showed highest egg positive rates. The survey confirmed high prevalence of soil-transmitted intestinal nematodes in rural areas in North Korea It is recommended to implement mass chemotherapy for al residents with a part sample examination in rural areas, North Korea.

• Korean Journal of Veterinary Service
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• v.25 no.1
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• pp.39-44
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• 2002

In order to monitor the parasites, 233 fecal samples were taken form horse in Jeonbuk area. Then identification of the parasites were determined by the fecal examination using the floatation and microscopical examination, respectively. The detection rate. was 31.7%, and mixed infection rate was single 22.7%(53 heads), double 8.2%(19 heads), and triple 1.3%(1heads). The isolates were identified as Trichostrongylus axei from 38 heads, Strongyloides westeri from 30 heads, Trichonema spp from 11 heads, Stongylus spp from 10 heads, Triodontophorus spp from 4 heads, and Dityocaulus arnfielde from 1 head.

• Parasites, Hosts and Diseases
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• v.31 no.3
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• pp.193-200
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• 1993

A total of 230 randomly collected formalin-fixed fecal samples (submitted to the Severance Hospital, Yonsei University) were selected for tests for human cryptosporidiosis. The stool specimens were examined for Cwptosporidium oocysts by acid-fast (AF) stain, auramin-rhodamine (AR) stain, and monoclonal antibody (mAb) OW3 fluorescence method specific for oocyst wall. Of the 230 stool specimens, 21% were identified by the AF method, 22% were identified by the AR method, and 10% were Identified by the mob fluorescence method, indicating that human Crvptosporidium infections have been existing in Korea.

• The Korean Journal of Applied Statistics
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• v.19 no.2
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• pp.217-230
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• 2006

e discuss proper confidence intervals for interval estimation of a low binomial proportion. A large sample surveys are practically executed to find rates of rare diseases, specified industrial disaster, and parasitic infection. Under the conditions of 0 < p ${\leq}$ 0.1 and large n, we compared 6 confidence intervals with mean coverage probability, root mean square error and mean expected widths to search a good one for interval estimation of population proportion p. As a result of comparisons, Mid-p confidence interval is best and AC, score and Jeffreys confidence intervals are next.

• Korean Journal of Veterinary Service
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• v.20 no.1
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• pp.95-102
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• 1997

Author investigated internal parasitism for the feces of dog's training center, breeding-dog farm, dairy farm, home by 120 indoor breeding dog and 566 outdoor one in Inchon area. This survey was done from February in 1994 to December in 1995. 1. As a result of total 686 samples, positives were 373(54.4%). Among them, indoor and outdoor breeding dogs were 21(3.1%) 352(51.3%), respectively. 2. According to breeding, it was manifested that 21samples (17.5%) of 120 indoor breeding dogs were positive, and 352 samples(62.2%) of outdoor breeding were positive. 3. The infection rate of dogs for food in dairy farm, breeding dogs in the farm, dog of training center and dog of house is high in order. 4. Infection rate of parasites in 24 dogs breeds, Mongrel dogs were 81.3%, Shepherds were 80.0%, Tosas were 78.4%, Akida and Siberian huskys were 76.2%, Jindos were 55.5%, Pointers were 50.0%, although Afghan hound, Spanial, Shin-tzu, Maltis and Buldog were examined as aparasites negative. 5. After administration with vermicide parasites infection rate were 43.0% in two months. In four months, it were 66.7%, and dogs without vermicide were 87.0%. It seemed like that further research about dosage of vermicide is needed. 6. The rate of single-infection was 37.6% and that of mixed-infection was 16.8%. Among classified 13 types, Ancylostoma caninum 35.6%, Toxocara cams 11.2%, Isospora sp 9.3%, Toxascaris leonina 5.1%, Trychuris vulpis 4.4% were investigated.

• Journal of the Korean Society of Food Science and Nutrition
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• v.19 no.1
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• pp.35.1-52
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• 1990

An ecological survey of early childhood nutrition and parasitic infection was undertaken among 102 children aged 3 to 6 atteending the three day care centers of Hongcheon county Kangwon province between June and July 1987. In frequency of skipping meal 35.1% of subjects often skipped breakfast ; 3.1% skipped breakfast every day. About 53% of those children complained of having poor appetite at breakfast. The percentage of children having meals with all the family members was 94.8% for breakfast and 97.9% for evening meal. In eatinf behavior 20.6% of the subjects had meals while watching TV; 21.6% moved around during a meal ; 22.1% hadmeal talking loudly ; 35.1% had quiet meal. Approximately 63% of children used chopsticks and others used fork or spork. Concerning of dietary staple boiled rice was dominant. The diversity of food selection by those children was so linmited that simply only one or two items of side-dishes and /or souop were taken at home. Subjects liked yorgurt milk lavers fruits and Ramyun in contrast to the loweest preference for fermented fist aroma-tic vegetables butter and margarine. The positive prevealence of parasitic infection was 35.5% including than that observed in any other rural areas. Incidence of Fibricola seoulenis was caused by local habit of eating hibernate frogs without enough boiling.

• Korean Journal of Veterinary Service
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• v.28 no.2
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• pp.107-112
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• 2005

In order to monitor the parasites, 204 fecal samples were taken from Korean indigenous goats of Iksan-branch. Then identification of the parasites was determined by the fecal examination using the floatation and microscopical examination, respectively. The detection of rates was $91.2\%$, and mixed infection rates were single $38.7\%,\;double\;28.4\%,\;triple\;15.2\%,\;Quadraple\;6.9\%\;and\;Qunituple\;20.0\%$. The isolated were identified as Eimeria spp from 169 heads, Strongyloides papillosus from 56 heads, Ostertagia spp from 24 heads, Trichostrongylus spp from 22 heads, Moniezia expensa from 18 heads, Oesophagostomum spp from 17 heads, Bonostomum spp from 12 heads, Cooperia spp from 12 heads, Heamonchus spp from 8 heads and Capillaria spp from 2 heads.

• Parasites, Hosts and Diseases
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• v.25 no.1
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• pp.69-82
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• 1987

The prevalences of the cuke belonging to genus Metagonimus hove been reported along the upper stream of inhabitants by several workers since 1980, however the taxonomical problems of the fluke was not yet settled. The larval flukes; cercaria and metacercaria as well as their intermediate hosts, and adult were studied in order to identify the Mepagonimus in the areas. The results obtained are summarized as follows: 1. The snails, Semisulcospira globus were collected (rom the three different localities along the upper stream of the River. The cercariae were found from 125(7.2%) out of 1,730 snails by natural emerging method, and were identified into 5 species including Metagenimus sp. (3.7%), Pseudexorchis major(1.4%), Cercaria nipponensis (0.9%), Cercaria incerpa(0.6%), and Cercaria yoshidae(0.6%). Cercariae of Metagonimus species had four to dye oral spines on its anterior of the first line. 2. The cercariae of Metagonimus were experimentally exposed to goldfish. nfection rate was 22.9% out of 105 goldfish, and the encysted metacercariae were found in fins(86.7%) and on scales (13.7%) of the fishes, but not in their muscle, head or visceral organs. 3. Seven species of ask were caught in the Daecheong Reservoir and the upper stream. Infestations with metacercaria of Metagonimus were found 100% in Opsariichtys widens and the parasitized numbers of the metacercariae were observed from 250 to 2,400 per fish. In the upper stream, Zacco termmincki, Z. platypus and Pseudogobio esocinus were infected 100% with the metacercaria, on the other hand, the fishes caught in the reservoir showed the lower infestation rates, and a few metacercariae found in the fishes Carassius carassius and Cyprinus carpio in the reservoir and the stream. The majority of metacercariae was detected only on the scales of fishes. 4. In order to know the infectivity and the distribution patterns in the intestine of hosts, rats and dogs were infected with the metacercariae obtained from O. bidens and Z. platypus. In addition the metacercariae obtained from Z. temmincki, P. esocinus and goldfish were given to the rats. The recovery rates of the worms in the small intestine of dogs were higher (63.3~65.8%) than those of the rats (3.5~31.6%). The flukes were found mostly in the middle and the lower part of small intestine of the rats and the dogs, but no worm was collected in the upper part of the intestine of rats. 5. The sixte of adult flukes varied by the hosts. In the adult cukes, oral sucker was smaller than ventral sucker, and the right and left testes were located diagonally, the uterine tubules circled around the upper left testis. The average egg sixte was $29.1{\times}1.7{\mu\textrm{m}}$. According to the above results, the cukes belonging to genus Metagonimus distributed along the Geum River was concluded to be identical with Miyata type of M. yokogawai as that Saito had proposed.

• Parasites, Hosts and Diseases
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• v.33 no.2
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• pp.135-138
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• 1995

In order to survey the prevalence of Buxtonelln sulcatc in Kyonggi-do in 1984 and 1994, the feces of cattle were collected and examined. Of 792 cattle in 1984 and 293 in 1994, cysts of B. sulcata were detected from 266 (33.6%) and 101 (34.5%) cattle respectively. The positive rates were 85.9% and 64.2% in breeder cattle, 44.8% and 9.4% in dairy cattle, 7.5% and 14.9% in Korean cattle and 1.8% in beef cattle. In spring, the cyst positive rates were 62.5% in 1984 and 27.8% in 1994; 20.1% and 66.7% in summer; 21.3% and 0% in autumn; and 34.8% 64.6% in winter. More cattle, 69.1%(184) and 55.5% (56) in 1984 and 1994, had diarrhea among the cyst postive cattle than those of cyst negative, 37.6% (198) and 32.3% (62).

• Parasites, Hosts and Diseases
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• v.36 no.2
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• pp.147-150
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• 1998

Fecal samples were collected from 257 dogs in four areas in Korea during the period of .january 1996 to November 1997 and examined by immunofluorescence assay for Crwptosporinium oocysts using a commercial diagnostic kit (Meridian Diagnostics, Cincinnati, Ohio) . Of the 257 samples, 25 (9.7%) were positive for Crvptosporiniun. Differences were noted in the prevalence of canine cryptosporidiosis in both areas and dog types. The results provide a further evidence of environmental contamination and widespread distribution of the parasite in Korea.