• Parasites, Hosts and Diseases
• /
• 제40권3호
• /
• pp.149-151
• /
• 2002

A 36-year old Korean woman consulted a clinic for a regular gynecological examination, and a mass was noticed in her pelvis. She was referred to the Asan Medical Center, Seoul where transvaginal ultrasonography confirmed a pelvic mass exceeding 10cm in diameter. She received total abdominal hysterectomy and bilateral salpingoophorectomy, and a borderline serous neoplasm with micropapillary features involving the left ovary and right ovarian serosa was histopathologically confirmed. In addition, a section of a nematode with numerous eggs was found in the parenchyma of the left ovary. The worm had degenerated but the eggs were well-preserved and were identified as those of Enterobius vermicularis. She is an incidentally recognized case of ovarian enterobiasis.

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

• Parasites, Hosts and Diseases
• /
• 제57권6호
• /
• pp.621-625
• /
• 2019

There is often the risk of confusing pollen grains with helminth eggs from archaeological sites. Thousands to millions of pollen grains can be recovered from archaeological burial sediments that represent past ritual, medication and environment. Some pollen grain types can be similar to parasite eggs. Such a confusion is represented by the diagnosis of enterobiasis in ancient Iran. The authors of this study confused a joint-pine (Ephedra spp.) pollen grain with a pinworm egg. This paper describes the specific Ephedra pollen morphology that can be confused with pinworm eggs.

• Parasites, Hosts and Diseases
• /
• 제54권5호
• /
• pp.591-603
• /
• 2016

Investigations of Enterobius sp. infection in prehistory have produced a body of data that can be used to evaluate the geographic distribution of infection through time in the Americas. Regional variations in prevalence are evident. In North America, 119 pinworm positive samples were found in 1,112 samples from 28 sites with a prevalence of 10.7%. Almost all of the positive samples came from agricultural sites. From Brazil, 0 pinworm positive samples were found in 325 samples from 7 sites. For the Andes region, 22 pinworm positive samples were found in 411 samples from 26 sites for a prevalence of 5.3%. Detailed analyses of these data defined several trends. First, preagricultural sites less frequently show evidence of infection compared to agricultural populations. This is especially clear in the data from North America, but is also evident in the data from South America. Second, there is an apparent relationship between the commonality of pinworms in coprolites and the manner of constructing villages. These analyses show that ancient parasitism has substantial value in documenting the range of human behaviors that influence parasitic infections.

• Parasites, Hosts and Diseases
• /
• 제48권1호
• /
• pp.75-78
• /
• 2010

The present study investigated characteristics of 24 parasite infection cases detected during colonoscopy in a regional hospital from January 2001 to December 2008. Sixteen patients were confirmed with Trichuris trichiura infection, 6 patients were with Ascaris lumbricoides infection, 1 patient with Enterobius vermicularis infection, and 1 patient with Anisakis infection. Among them, 7 patients (43.8%) were asymptomatic. Colonoscopy findings were normal in 18 patients (75.0%). Among the patients with T. trichiura infection, colonoscopy showed several erosions in 2 patients (8.3%) and non-specific inflammation of the affected segment of the colon in 3 patients (12.5%). In 1 patient with anisakiasis, colonoscopy revealed a markedly swollen colonic wall. Stool examinations were performed before treatment in 7 patients (29.2%) and were all negative for parasite eggs or worms. These results suggest that colonoscopy is a useful diagnostic approach for parasitic infections even for asymptomatic patients and for patients with negative stool examinations.

• Parasites, Hosts and Diseases
• /
• 제55권5호
• /
• pp.579-582
• /
• 2017

To investigate the prevalence of intestinal parasite infections in Yanbian Prefecture, Jilin Province, China, epidemiological surveys were conducted on a collaboration basis between the Korean Centers for Disease Control and Prevention and the Yanbian Center for Disease Control and Prevention. A total of 8,396 (males 3,737 and females 4,659) stool samples were collected from 8 localities and examined with the formalin-ether sedimentation technique, and additionally examined with the cellotape anal swab to detect Enterobius vermicularis eggs. The overall rate of intestinal parasites was 1.57%. The prevalence of Ascaris lumbricoides was the highest (0.80%), followed by Entamoeba spp. (0.23%), heterophyid flukes (0.15%), Clonorchis sinensis (0.08%), Enterobius vermicularis (0.07%), hookworms (0.06%), Trichostrongylus spp. (0.06%), Giardia lamblia (0.04%), Paragonimus spp. (0.02%), Diphyllobothrium spp. (0.02%), Trichuris trichiura (0.02%). The prevalence by sex was similar, 1.58% (n=59) in males and 1.57% (n=73) in females. By the present study, it is partly revealed that the prevalences of intestinal parasite infections are relatively low among the inhabitants of Yanbian Prefecture, Jilin Province, China.

• Parasites, Hosts and Diseases
• /
• 제53권4호
• /
• pp.497-499
• /
• 2015

To determine whether pinworm infections and head lice infestations spread among children in orphanages, 117 children from 4 orphanages in Busan-si and Ulsan-si, Korea, were examined for enterobiasis and head lice infestation between January and February 2014. The overall rate of Enterobius vermicularis egg positivity was 0.85%, whereas none of the children had head lice infestations. The rate of pinworm infection was much lower among the orphanage children compared to the rates observed in previous studies among kindergarten and primary school students. Moreover, the risk factors for enterobiasis were less frequent among these subjects than previously reported. The personal hygiene and health of the orphanage children were supervised by a regular, employed nurse through a health education program. In conclusion, pinworm infection was efficiently controlled among the children in orphanages, and this might be related to good personal hygiene practices in Korea.

• Parasites, Hosts and Diseases
• /
• 제26권3호
• /
• pp.215-220
• /
• 1988

국내 일부 지역 국민학교 학동에 있어서 요충 감염상태를 알아보고자 하였다. 즉, 1984년 10월 서을 지역의 한 국민학교와 경기도 양주군의 한 국민학교, 1986년 10월 경기도 의정부의 한 국민학교에 대하여 항문주위 도말검사를 오전 9시∼12시 사이에 1회 실시하였다. 한편 1988년 10월 상기 국민학교 3학년 학동들에게 요충감염에 영향을 미칠 것으로 생각되는 가정환경 요인들에 대하여 설문 조사를 시행하였다. 국민학교 학동의 요충란 양성률은 평균 16.0%(2,156명 조사)였고 남자가 14.5%(1,118명), 여자 가 17.6%(1,038명)로서 여자에서 약간 높았다. 또 저학년보다 고학년에서 낮은 양성률을 보였다. 지역별로는 서울의 유현국민학교 학동이 13.6%로 가장 낮은 양성률을 보였고 경기도의 호암국민학교가 17.5%, 덕산국민학교가 17.6%의 양성률을 각각 보였다. 학동의 요충 감염에 영향을 미칠 것으로 생각되는 여러 가정환경 요인들중 가장의 직업, 형제수, 어린이 방의 유무, 목욕실 유무 등이 유의한 요인으로(p<0.1) 나타났다. 이상의 결과는 학동의 요충 감염이 아직도 높은 상황임을 보이고 있으나, 과거 10연전의 성적과 비교해 볼 때 감소되고 있으며, 특히 생활수준과 가정환경 요인의 개선이 감염률의 감소에 영향을 미치고 있음을 알 수 있었다.

• 농촌의학ㆍ지역보건
• /
• 제10권1호
• /
• pp.36-41
• /
• 1985

To evaluate the parasitic infection rates among inhabitants in urban area of Seoul, Korea, a total of 5,275 stool and anal swab specimens was obtained from 2,527 male and Z,748 female living in 24 Dongs of 17 Kus. Cases were sampled randomely to represent 1,000 inhabitants refereed to the census in 1980. The methods employed were formalin ether technique to detect helminth ova and protozoan cysts and scotch tape anal swab technique to detect eggs of Enterobius vermicularis. The results obtained are as follows ; 1) Total positive rate of helminthes was 23.5% among 5,275 (male 22.5% and female 24.5%) specimens. Nine kinds of the helminthes were detected and infection rates of each helminth were; Ascaris lumbricoides 4.1%, Hookworm 0.1%, Trichuris trichiura 11.1%, Trichostrongylus orientalis 0.1%. Clonorchis sinensis 1.2%, Metagonimus yokogawai 0.1%, Taenia spp. 0.2%, Hymenolepis nana 0.3 and Enterobius vermicularis 9.6%. 2) Total positive rate of intestinal protozoa was 1.4%. Four kinds of the protozoan cysts were detected and the infection rates of each protozoa were; Entamoeba histolytica 0.15%, E. coli 0.4%, Endolimax nana 0.04% and Giardia lamblia 0.89%. 3) No significant differences in the parasitic infection rate by sex was noticed although male group showed lower infection rate than female group. However the incidence of C. sinensis, M. yokogawai and Taenia spp. was twice as much in female group as in male group. 4) No difference in the infection rate by age was found although E. vermicularis positive rate was highest in "0~9 years group" by 2.1% and C. sinensis infection rate was higher in over "30~39 years group". The parasitic infection rate of the present study was significantly lower than those of previous reports in Seoul area and other provinces.

• Parasites, Hosts and Diseases
• /
• 제35권3호
• /
• pp.215-218
• /
• 1997

심한 항문 주위 가려움증이 있는 15개월 된 소아(인천 거주)로부터 과수태 요충 1마리를 항문 주위 도말법으로 회수하였다. 충체는 길이가 7.8 mm이고 폭이 0.5 mm였으며. 두익(73보) 자궁내 충란. 뽀족한 로리 등 요충 자충의 특이한 형태학적인 특징을 가지고 있었다. 그러나 이 충체는 과수태한 충체로서 자궁이 충체 전단에서부터 후단까지 길게 확장되어 있었으며. 충체 길이 의 약 99%까지 수많은 충란으로 가득 차 있고 다른 기관은 관찰하기 어려운 특이한 충체이었다.