• Parasites, Hosts and Diseases
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• 제26권4호
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• pp.275-284
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• 1988

1988년 2월 및 5월에 전라남도 여천군 남면 소재 연도 주민 1,011명 (남자 507명, 여자 504명)에 대하여 formalin-ether 침전법으로 장내 기생충 감염상환을 조사하고, 장내 윤충란 양성자 의 경우 감염강도를 E.P.G.로 측정한 바 다음과 같은 결과를 얻었다. 주민 1,011명중 398명 (39.4%)이 장내 기생충 양성자이었고 윤충 감염이 372명 (36.8%), 원충 감 염이 56명(5.5%)이었다. 검출된 기생충은 모두 10종으로서 편충란 양성자가 278명(27.5%)으로 가 장 많았고 그 다음이 회충 176명(17.4U, 불수정란 양성자 31명 포함), Taenia sp. 59명(5.8%)이었으며, 대장아메바 3.3%, 람블편모충 1.5%, 왜소아메바 0.8%, 왜소조충 0.4%이었고, 구충, 동 양모양선충 및 이질아메바가 각각 0.2%의 양성률을 보였다. 성별 감염률은 여자가 44.0%로 전 연령군에서 남자 34.7%보다 높았다. 연령별로는 40대가 46.0%로 가장 높았고 10세 미만이 33.1%로 가장 낮았다. 회충란 양성자중 149명의 E.P.G.는 평균 1,876(범위 200∼17,800), 편충 E.P.G. 는 검사자 242명에서 평균 327(범위 200∼1,600)이었다. 장내 기생 윤충의 양성자 572명중 단일 감염은 236명 (63.4%), 2종 감염은 129명 (34.7%), 3종 감염은 7명 (1.9%)이었고, 원충시스트 양성자 56명 중 단일 감염은 53명 (94.6%), 2종 감염은 3명 (5.4%)이었다. 이상의 결과로 보아 낙도 주민의 장내 기생충 감염률은 높음을 알 수 있으며 이의 퇴치를 위하여 생환 주변 환경의 개선, 집단 치료, 보건 교육 등 적극적인 관리가 시급히 수행되어야 할 것으로 생각된다.

• Parasites, Hosts and Diseases
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• 제38권3호
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• pp.183-185
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• 2000

To determine the status of infection caused by intestinal parasites among children and adolescents living in Legaspi city, the Philippines, we performed a small survey by fecal examination for helminth ova and protozoan cysts with formalin-ether concentration method. Of the 64 examinees, the infection rate was 78.1%. The infection rates of primary school children, preschool children and adolescents were 95.5%, 64.7% and 87.5%, respectively. The infection rate in urban areas was 56%, and 92.3% in rural areas. The infection rates were 51% with Trichuris trichiura, 40% with Ascaris lumbricoides, 23.4% with hookworm, 15.6% with Iodamoeba butschlii, 14.1% with Endolinax nana, 9.4% with Entamoeba coli and 7.8% with Giardia lamblia. There were 33 cases with multiple infection (51.6%). Mixed infection with more than 3 parasites was observed in 15 cases, all of them being children and adolescents living in rural areas. By this survey, it was conjectured that helminthic infection is prevalent among children and adolescents in Legaspi, Philippines. To determine the status of infection caused by intestinal parasites among children and adolescents living in Legaspi city, the Philippines, we performed a small survey by fecal examination for helminth ova and protozoan cysts with formalin-ether concentration method. Of the 64 examinees, the infection rate was 78.1%. The infection rates of primary school children, preschool children and adolescents were 95.5%, 64.7% and 87.5%, respectively. The infection rate in urban areas was 56%, and 92.3% in rural areas. The infection rates were 51% with Trichuris trichiura, 40% with Ascaris lumbricoides, 23.4% with hookworm, 15.6% with Iodamoeba butschlii, 14.1% with Endolinax nana, 9.4% with Entamoeba coli and 7.8% with Giardia lamblia. There were 33 cases with multiple infection (51.6%). Mixed infection with more than 3 parasites was observed in 15 cases, all of them being children and adolescents living in rural areas. By this survey, it was conjectured that helminthic infection is prevalent among children and adolescents in Legaspi, Philippines.

• Parasites, Hosts and Diseases
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• 제58권6호
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• pp.701-707
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• 2020

A survey was performed to investigate the infection status of zoonotic helminth larvae in fish from a local market of North Dagon District in Yangon City, Myanmar. A total of 486 fish in 13 species were collected 8 times from December 2015 to December 2019. All fish were transported under ice to a laboratory in Korea and examined for helminth larvae using artificial digestion method. Larval gnathostomes and metacercariae of more than 8 zoonotic trematode species, i.e., Opisthorchis viverrini, Haplorchis taichui, H. pumilio, H. yokogawai, Centrocestus spp., Stellantchasmus falcatus, Pygidiopsis cambodiensis, and Procerovum sp., were detected. Larval gnathostomes were found in 58 (16.0%) out of 362 fish of 6 species, with mean intensity of 2.8 per fish infected. Metacercariae of O. viverrini were detected in 10 (2.9%) out of 349 fish of 5 species, with mean intensity of 16.9 per fish infected. Metacercarial prevalences of 4 intestinal flukes, H. taichui, H. pumilio, H. yokogawai, and Centrocestus spp., were 16.8%, 26.0%, 12.5%, and 15.0% in the positive fish species, respectively, and mean metacercarial intensity was 63.3, 26.8, 86.2, and 8.7 per fish infected. Metacercariae of S. falcatus and P. cambodiensis were detected only from the mullet, Chelon macrolepis. Metacercariae of Procerovum sp. were found in Channa striata and Anabas testudineus. Collectively, it was confirmed that the fish were infected with gnathostome larvae and metacercariae of O. viverrini and intestinal flukes in Yangon City, Myanmar.

• Parasites, Hosts and Diseases
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• 제47권3호
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• pp.243-247
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• 2009

The prevalence of liver and intestinal helminth infections, including Opisthorchis, Haplorchis, Phaneropsolus, hookworms, Enterobius, and Taenia, was surveyed in Khammouane province, Lao PDR. Fecal specimens were collected from 1,242 people (590 men and 652 women) in 3 Mekong riverside villages and were examined by the Kate-Katz thick smear technique. The overall helminth egg positive rate was 81.1%. The positive rate for small trematode eggs, including Opisthorchis viverrini, heterophyids, and lecithodendriids, was 81.1% and the positive rate for hookworms was 6.7%. To obtain adult worms, 35 people who were positive for small trematode eggs were treated with 20-30 mg/kg praziquantel and 10-15 mg/kg pyrantel pamoate, and then purged. Diarrheic stools were collected from 33 of these people and searched for helminth parasites using a stereomicroscope. Mixed infections with various helminths (Haplorchis taichui, Haplorchis yokogawai, Prosthodendrium molenkampi, Phaneropsolus bonnei, echinostomes, hookworms, Trichostrongylus spp., Trichuris trichiura, Enterobius vermicularis, and/or Taenia saginata) were found. The total number of helminth specimens collected was 20,907 (approximately 634 per person). The most common species was H. taichui, followed by P. molenkampi, 0. viverrini, P. bonnei, E. vermicularis, hookworms, and Trichostrongylus spp. These results show that diverse species of intestinal nematodes, trematodes, and cestodes are infecting humans in Khammouane province, Lao PDR.

• Parasites, Hosts and Diseases
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• 제38권4호
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• pp.275-277
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• 2000

The status of intestinal parasite infections was investigated in two rural villages (Chitrasar, Jerona) in Chitwan District, Nepal in 1999. Stool examination was performed with a total of 300 specimens from schoolchildren by formalin-ether sedinentation technique. The prevalence rate of intestinal parasite infections in the surveyed areas was 44.0%. The prevalence rate in Jerona was slightly higher than that in Chitrasar. The prevalence rate of intestinal parasite infections in female was slighly higher than that in male without statistically significant difference. Entamoeba coli was the most commonly found protozoan parasite (21.0%) followed by Giardia lamblia (13.7%) and others (5.3%). Hookworm was the most prevalent intestinal helminth (13.0%) followed by Trichuris trichiura (3.0%) and others (5.0%). forty-three specimens (14.3%) Showed mixed infections. It is necessary to implement large-scale treatment with anthelminthics, health education and sanitary improvement for intestinal parasite control in the surveyed areas.

• Parasites, Hosts and Diseases
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• 제32권1호
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• pp.27-34
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• 1994

지난 1984년의 제1차 보고에 이어 1984년부터 1992년까지 9년간 서울 백병원 외래 및 입원환자 중 기생충검사를 의뢰한 52.552명에 대하여 포르말린-에테르 집란법 및 직접 도말법으로 대변검사를 시행하였던 바 그 결과는 다음과 같았다. 총 윤충류(13종) 충란 및 원충류(5종) 포낭 양성률은 각각 평균 6.5% 및 2.5%이었다. 윤충류 종별 양성률(양성자수)은 간흡충 3.2% (1.667). 편충 2.1%(1 089) 요꼬가와흡충 1 2%(613), 회충 0.2%(100) 동양모양선충 0.06%(34). 유무구조충 0.05%(28). 왜소조충 0.03%(18). 구충 0.03%(17). 극구흡충류 0.03%(15), 폐흠충 0.02%(12). 요충 0.02%(10) 분선충 0.01%(6), 광절열두조충 0.004% (2)이었다. 원충 별로는 대장아메바 1.1%(588). 왜소아메바 0.8%(402), 람블편모충 0.3% (173), 이질아메바 0.3%(164). 장트리코모나스 0.004%(2)로 나타났다. 조사년도별로 볼 때 회 충 및 편충 등 토양매개성 윤충은 뚜렷한 감소를 보이는 반면 간흡충을 비롯한 패류 매개성 윤충과 장내 원충류는 양성률의 감소를 인정할 수 없었다.

• Parasites, Hosts and Diseases
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• 제21권1호
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• pp.102-104
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• 1983

A total of 2,026 leprosy patients of the National Sorokdo Hospital was examined their infestparasites by cellophane thick smear method in January, 1983. The egg positive cases of Taenia spp. were treated with bithionol and the segments of Taenia were collected for species identification. The results were as follows: 1. Total egg Positive rate of any kind helminth was 78.2% and cumulative total was 85.2%. The egg positive rate for each helminth was as follow; Taenia spp. 3.4%, Ascaris lumbricoides 4.5%, Trichuris trichiura 72.1%, Clonorchis sinensis 2.8% and other 0.05%. 2. A total of 66 Taenia eggpPositive cases was treated; out of them proglottids of Taenia were collected from 26 cases. All of the collected worms were identified as T. saginata. The results revealed signiBicantly high egg positive rate of T. trichiura. However, A. lumbricoides was found to be controlled considerably by repeated chemotherapy during past 3 years. If chromotherapeutic agent is replaced with oxantel-pyrantel tablet, better result is expected. No clue was found for prevalence of T. sodium from both human and the pig in the island.

• Parasites, Hosts and Diseases
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• 제24권2호
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• pp.209-212
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• 1986

The present study was undertaken to evaluate the present status of intestinal parasitic infection in Seoul area, Korea. During the period from June 1985 to July 1986, a total of 5,251 stool samples were collected in Department of Clinical Pathology, Hanyang University Hospital and examined by formalin-ether sedimentation technique once for helminth ova and protozoan cysts. The results were summarized as follows: 1. The overall egg positive rate of intestinal helminthes was 2.53%; and 1.43% for Clonorchis sinensis, 0.7% for Trichuris trichiura, 0.13% for Metagonimus yokogawai, 0.06% for hookworm, and 0.02% for Ascaris lumbricoides, Diphyllobothrium latum and Hymenolepis nana, respectively. 2. The overall cyst positive rate of intestinal protozoa was 1.07%. Cyst positive rate was 0.06% for Entamoeba histolytica and 0.13% for Giardia lamblia, respectively. 3. Higher prevalence of intestinal parasitic infection was observed in male and in $21{\sim}50$ year-old groups. 4. The highest prevalence of Clonorchis sinensis infection was observed in 40th age group (3.4%), and male (2.3%) was more infected than female (0.7%) in general.

• 셀메드
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• 제8권3호
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• pp.15.1-15.5
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• 2018

Helminthiasis is one of the most common worm diseases which causes a range of adverse health problems in humans. Ayurveda is one of the most prominent and ancient systems of traditional medicines in India. Most Ayurvedic drugs used against intestinal helminths have been developed by traditional wisdom and therefore lack a proper validation through controlled studies. The aim of the present study was to scientifically validate the in vitro efficacy of three common Indian Ayurvedic anthelmintic drugs, viz. Krimimudgar Ras, Kriminol and Vidangasava in relation to the synthetic broad-spectrum anthelmintic drugs, praziquantel and albendazole. The in vitro testing of Ayurvedic anthelmintics was done against an intestinal cestode, Raillietina sp. and a nematode, Syphacia obvelata, employing 10 mg/ml, 30 mg/ml and 50 mg/ml concentrations of each medicine. The anthelmintic efficacy was judged on the basis of paralysis and mortality time of worms after exposing to these Ayurvedic drugs. Of the three tested Ayurvedic medicines, Krimimudgar ras (KR) showed the most prominent efficacy, against both the cestode and nematode parasites. At 50 mg/ml concentration, KR caused mortality of cestodes in $7.53{\pm}0.15hr$, and of nematodes in $7.61{\pm}0.19hr$. Vidangasava was found to be comparatively less effective against the tested helminth parasites. The results of this study indicate that Ayurvedic formulations do possess significant anthelmintic effects, however, an evidence-based research is required to validate all currently used Ayurvedic anthelmintics, using proper controlled studies.

• Parasites, Hosts and Diseases
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• 제38권3호
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• pp.179-181
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• 2000

Stool and cellotape anal swab examinations were carried out in August 1997 on handicapped people at an institution located in Chorwon-gun, Kangwon-do, Korea. A total of 112 stool samples (78 males and 34 females) revealed three cases of Trichuris trichiura infection and one case of Enterobius vermicularis infection. Other helminth eggs were not detected. The overall prevalence rate was 35.7% (38.5% for males and 29.4% for females). More than two different kinds of parasites were found in 42.0% of the positive stool samples (17 cases). The infection rates for protozoan cysts are as follow : Entamoeba coli (25.0%), E. histoIUtica (1.8%), Endolinax nana (21.4%), Iodoamoeba butschlii (1.8%) and Giardia lamblia (0.9%). In cellotape anal swab examinations (165 samples), the prevalence rate of E. vemicularis was 20.6% (25.7% of males and 9.6% of females). In conclusion, the handicapped people in the institution showed higher infection rates of protozoan parasites and E. vemicularis, possibly due to more accessibility to the infection.