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PubMed1997

An unusual over-gravid female of Enterobius vermicularis recovered from a child.

An unusual over-gravid female of Enterobius vermicularis was recovered from a 15-month old child by cello-tape anal swab. The patient resided in Inchon and complained of severe anal itching. The worm measured 7.8 mm in length and 0.5 mm in width, and retained typical morphologic features of E. vermicularis such as cephalic alae and a sharply pointed posterior end. In this gravid female, peculiarly, the uterus was tremendously distended, and about 99% of the whole body length was completely packed with a great number of eggs. Other internal organs were difficult to observe. This paper describes a peculiar over-gravid female of E. vermicularis.

Animals↗
PubMed2000

Enterobius vermicularis egg positive rate in a primary school in Chungchongnam-do (province) in Korea.

The egg positive rate of Enterobius vermicularis was investigated among students of a primary school and a kindergarten located in the rural area of Tangjin-gun, Chungchongnam-do in December, 1998. Of the 189 examinees, 28 (14.8%) were found to be infected with E. vermicularis by the adhesive cellotape anal swab method. The infection rates ranged from 4.2% to 26.1% among school children, and the highest rate was observed in children attending kindergarten. Three months after treatment with albendazole, four (14.3%) out of 28 infected children still remained infected with E. vermicularis. Through this survey, we were able to determine that E. vermicularis infection is still prevalent among children in rural areas of Korea.

Albendazole↗
PubMed2000

Enterobius vermicularis egg positive rate of pre-school children in Chunchon, Korea (1999).

Pre-school children were examined for the presence of Enterobius vermicularis egg by perianal swab method. We visited 67 nurseries and 25 kindergartens between January, 1999 and April, 1999 in Chunchon, Korea. Of the 4,711 children examined, 434 (9.2%) were found to be positive for E. vermicularis egg. The egg positive rates of boys and girls were 10.1% and 8.1%, respectively. The rates were 7.8% in kindergartens and 9.7% in nurseries. Positive rate of 50 institutions was less than 10%. Rate in 35 institutions was from 10% to less than 20%. Rate in 7 institutions was equal to or over 20%. Out of 1,113 children examined twice, 28 (2.5%) children were positive consecutively, 53 (4.8%) were positive with negative conversion, 47 (4.2%) were negative with positive conversion, and 985 (88.5%) were consecutively negative. It means that in the low endemic area of enterobiasis with around 10% positive rate, the two consecutive examinations may increase the egg detection rate of 4.2-4.8%. The small number of consecutive egg positive children also suggests that the worm burden of the positive children might be low. Since the egg positive rate of that age group in this City increased from 1.85% (1997), and 3.0% (1998), the more intensive regular control should be executed.

Animals↗
PubMed2003

Egg positive rate of Enterobius vermicularis of primary school children in Geoje island.

The status of pinworm (Enterobius vermicularis) egg positive rate of primary school children in Geoje island was investigated by using adhesive cellotape anal swap method, in September, 2002. Total egg positive rates of E. vermicularis were 9.8% (74/754) and those of male and female were 10.8% and 8.7%, respectively. Among three schools examined, Myeongsa primary school showed the highest egg positive rate (12.6%) followed by Yeoncho [9.8% (26/266)] and Geoje [9.1% (35/385)]. As for the age groups, the 2nd grade had the highest egg positive rate (15.3%), whereas the 5th grade showed the lowest egg positive rate (2.6%). The above result led us to confirm that the egg positive rates of E. vermicularis in primary school children in Geoje island were not significantly different from the those in the whole country including urban and rural areas, showing more than 10%.

Animals↗
PubMed2005

Egg positive rate of Enterobius vermicularis and Taenia spp. by cellophane tape method in primary school children in Sivas, Turkey.

The aim of the present study was to find out the number of students with enterobiasis and/or taeniasis in primary schools of Sivas. Among the 2,029 students in 6 primary schools, 316 (15.6%) were positive to Enterobius vermicularis eggs and 32 (1.6%) were positive to Taenia spp. eggs by the cellophane tape method. The egg positive rates of E. vermicularis and Taenia spp. ranged from 9.4% to 27.2% and from 0.8% to 2.6% respectively among six schools. The egg positive rate of E. vermicularis was found to be significantly different among these schools (chi2 = 31.96, P < 0.05), whereas there was no significant difference between the schools for Taenia spp. (chi2 = 4.37; P > 0.05). The rate (18.7%) of E. vermicularis in the urban slum regions was higher than the rate (11.5%) in the urban central regions (chi2 = 19.20; P < 0.05). Above results demonstrate that the egg positive rate of E. vermicularis and Taenia spp. was still prevalent among primary school children.

Animals↗
PubMed2005

A survey of Enterobius vermicularis infection among children on western and southern coastal islands of the Republic of Korea.

To determine the status of Enterobius vermicularis infection among children living on western and southern coastal islands of the Republic of Korea, children (3-10 years) in 39 kindergartens and primary schools were examined using the cello-tape anal swab method, during July and August 2000. Of 1,661 children examined, 307 (18.5%) were found to be positive for E. vermicularis eggs. The highest infection rate (59.3%) was found in a kindergarten and a branch school of Shinyang primary school on Chujado, Jeju-do (Province). Remarkable differences in egg positive rates were observed in different localities. The egg positive rate for boys (21.3%) was significantly higher than that of girls (15.4%) (P = 0.02). However, positive rates were not significantly dependent on age. The results of the present study show that E. vermicularis infection is highly prevalent among pre-school and primary school children living on the western and southern coastal islands of the Republic of Korea, and indicate the need for efforts to control this infection.

Animals↗
PubMed2006

Egg positive rate of Enterobius vermicularis among preschool children in Cheongju, Chungcheongbuk-do, Korea.

In an attempt to determine the prevalence of pinworm infection, the egg positive rate of Enterobius vermicularis was examined using the adhesive cello-tape anal swab method in 1,512 preschool children sampled from a total of 20 kindergartens in Cheongju city, in November to December of 2004 (951 children from 13 kindergartens) and September to October of 2005 (561 from 7 kindergartens). The overall egg positive rate was found to be 7.9% (119/1,512); 9.3% (73/784) for boys and 6.3% (46/728) for girls, respectively. The 5-year age group evidenced the highest egg positive rate (10.9%, 47/430) among the examined age groups. As compared to those reported from previous works (ranged from 9.2 to 26.1%), the prevalence of E. vermicularis in the Cheongju city area is relatively low.

Animals↗
PubMed2004

Enterobius vermicularis infection among population of General Mansilla, Argentina.

AIM: To evaluate the relationships between the personal, sociocultural, and environmental characteristics, and the presence or absence of symptoms with the detection of Enterobius vermicularis (E. vermicularis) in a population sample in our region (General Mansilla, Province of Buenos Aires, Argentina), by individual and familiar analyses. METHODS: E. vermicularis was diagnosed in 309 people from 70 family units residing in the urban area and the rural area of the city of General Mansilla. Each of them was surveyed so as to register personal, environmental and sociocultural data. Questions about the presence or absence of anal itch, abdominal pain and sleeping disorder were also asked. Significant associations were determined by square chi tests. Logistic regression models were adjusted by using a backward conditional stepwise method to determine the presence of this parasite in the individuals and in the families. RESULTS: The parasites were found in 29.12% (90/309) of the individuals, with a frequency of 14.28% (20/140) among the heads of the families and of 41.42% (70/169) among the children. The only variables showing a significant association were affiliation, where the risk category was "being the son/daughter of", and the symptoms were abdominal pain, sleeping disorder, and anal itch. Families with a member infected with parasite were considered Positive Families (PF) and they were 40/70 (57.14%), only 5% (2/40) of the PF had 100% of their members infected with the parasite. The logistic regression models applied showed that the risk categories were mainly affiliation (son/daughter) and housing (satisfactory) among others. CONCLUSION: The presence of E. vermicularis was proved in one third of the studied population. The frequency of families with all their members infected with the parasite was very low. Most of the studied personal, sociocultural, and environmental variables did not turn out to be significantly associated with the presence of the parasite. An association with the category of "son/daughter" and housing classified as "satisfactory" was determined. The latter may be due to the fact that the people living in that category of housing have hygienic practices at home that favour the distribution of the eggs in the environment. The presence of the analysed symptoms was associated with the presence of the parasite, thus strengthening the need of periodical control of the population showing at least one of these symptoms.

Abdominal Pain↗
PubMed1977

Enterobius vermicularis in ectopic sites.

We document six cases in which tissues were invaded by Enterobius vermicularis. These cases illustrate several mechanisms whereby the worms form granulomata in ectopic sites. In three cases, the worms passed through pre-existing breaches in the intestinal mucosa. In one case, a gravid worm migrated via the female genital tract to ther peritoneal cavity. In two other cases, male worms were found on the outer surface of the intestine, suggesting active penetration of the intestinal wall.

Adult↗
PubMed2002

Detection of Enterobius vermicularis eggs in the submucosa of the transverse colon of a man presenting with colon carcinoma.

We report a case of a chronic infiltrate of the intestinal wall of the transverse colon by the eggs of Enterobius vermicularis in a man who had immigrated to Taiwan from mainland China 50 years ago. During surgery for suspected transverse colon carcinoma, histologic examination of the tumor mass revealed eggs of E. vermicularis embedded in granulation tissue in the submucosa of the transverse colon. Results of a stool examination were negative for eggs but strongly positive for occult blood. The mass in the transverse colon was completely removed during surgery. At the present time, the patient remains asymptomatic.

Aged↗
PubMed1999

Purification and characterization of an arylamine N-acetyltransferase in the nematode Enterobius vermicularis.

N-acetyltransferase (NAT) activities were determined by incubation of Enterobius vermicularis cytosols with 2-aminofluorene (2-AF) as the substrate followed by high pressure liquid chromatography assays. The NAT activity from E. vermicularis was found to be 0.41 +/- 0.08 nmol/min/mg protein for 2-AF. The apparent K(m) and Vmax values obtained were 0.81 +/- 0.11 mM and 2.25 +/- 0.22 nmol/min/mg protein respectively, for 2-AF. The optimal pH value for the enzyme activity was 7.5 for 2-AF. The optimal temperature for enzyme activity was 37 degrees C for the 2-AF substrate. The molecular weight of NAT from E. vermicularis was 44.9 kD. Among a series of divalent cations and salts, Zn2+, Ca2+, and Fe2+ were the most potent inhibitors. Of the protease inhibitors, only ethylenediaminetetraacetic acid significantly protected the NAT. Iodoacetate, in contrast to other agents, markedly inhibited NAT activity. This report is the first demonstration of acetyl coenzyme A-dependent arylamine NAT activity in E. vermicularis and extends the number of phyla in which this activity has been found.

Animals↗
PubMed1999

Cytologic diagnosis of Enterobius vermicularis eggs in an enterocutaneous fistula.

A middle-aged female underwent a laparotomy for suspected ovarian cancer and developed a discharging sinus in the right iliac fossa. Smears of the discharge showed helminthic eggs which were characterised as those of Enterobius Vermicularis. The possibility of an enterocutaneous fistula was suggested which was subsequently confirmed during a relook laparotomy.

Animals↗
PubMed1975

[Epidemiology of Dientamoeba fragilis Jepps and Dobell, 1918. 3. Further studies on Enterobius transmission through eggs].

In two new attempts to infect human subjects with pin-worms that were infested, at that time, with protozoa Dientamoeba fragilis, presence of these protoza in the intestinal canal was observed in one case for more than 84 days, and in another case for more than 31 days after contamination. The duration of latent periods fixed for Enterobius vermicularis was almost identical (51 and 50 days). New attempts implement and confirm the results of the first successful attempts to transfer the infection (Ockert, 1972b) as well as the hypothesis of the epidemiological interrelation between both parasites (Burrows and Swerdlow 1956).

Amebiasis↗
PubMed2001

Allergic disease and the infestation of Enterobius vermicularis in Swedish children 4-10 years of age.

BACKGROUND: The possible association between certain childhood infections and the propensity to develop allergic disease may include intestinal helminth infections. The experiences of such associations derive mainly from studies in tropical areas, and the results are not clear-cut. OBJECTIVE: To explore the association between Enterobius vermicularis and allergic disease in Swedish children 4 to 10 years of age. METHOD: The occurrence of E. vermicularis was examined by perianal tape tests in 70 allergic children recovered from a pediatric register of positive skin-prick tests. A nonallergic control group (n = 102) was gathered from a cohort of children previously examined for the prevalence of E. vermicularis and allergic symptoms. RESULTS: In the allergic group 26 of the 70 cases (37%) had a positive tape-test for E. vermicularis, compared to 23 of the 102 cases (23%) in the nonallergic control group (p = .037). CONCLUSION: The results indicate that E. vermicularis could be more frequent in children with allergic disease as defined by allergic symptoms and a positive skin-prick test compared to nonallergic children, i. e., those without a history of allergic disease. These data, however, do not allow any conclusion on the nature of the possible association between E. vermicularis and allergic disease.

Animals↗
PubMed2001

The prevalence of Enterobius vermicularis among primary school students in Samut Prakan Province, Thailand.

A prevalence survey of Enterobius vermicularis in primary school students aged 6-10 years in Bang Plee district, Samut Prakarn Province, Thailand was undertaken from January to March 2000. There were 783 subjects, 395 males and 388 females. Diagnosis was done by transparent tape swab technique. It revealed that 1) worms were found in 38.82% of the students, 2) there was a correlation between prevalence of parasite infection and student sex and age and 3) family socio-economic background (income and occupation) had no relationship with the prevalence of the enterobiasis (p < 0.05).

Age Factors↗
PubMed2003

[Severe diarrhea and eosinophilic colitis attributed to pinworms (Enterobius vermicularis)].

In a 32-year-old woman suffering from severe diarrhoea, eosinophilic infiltration of colonic mucosa and a peripheral eosinophilia, microbiological investigations only revealed large numbers of Enterobius vermicularis (pinworm) in the faeces. Treatment with mebendazole resulted in a rapid resolution of symptoms and disappearance of the eosinophilia, which strongly suggested a causative role of this pinworm in the clinical syndrome of the patient. E. vermicularis is generally regarded as an innocent nematode, which at most causes perianal pruritus due to migration of worms from the colon and expulsion of eggs onto the perianal skin. Although the pinworm maturates and lives in the gut, gastrointestinal symptoms have seldom been reported. E. vermicularis infection should be considered in patients with unexplained eosinophilic enteritis.

Adult↗
PubMedDate not supplied

[Aspects of the relation between Enterobius vermicularis and appendectomy in Oradea].

The relationship between the nematode Enterobius vermicularis and appendicectomy in three age-groups: 0--15, 16--20 and 21--25 years was followed during the 1968-1973 period. Following the compaign against enterobiosis, there was a significant decrease in the number of operations for appendicitis in the 0--15 years age-group; the incidence of appendicectomy was greater in the 16--20 years age-group than in the reference 21--25 years age-group.

Adolescent↗
PubMed1992

Enterobius vermicularis salpingitis: a distant episode from precipitating appendicitis.

Chronic pelvic inflammatory disease is a common gynecologic diagnosis in women with chronic pelvic pain. When standard antimicrobial therapy does not improve the clinical status, uncommon diagnoses such as Enterobius vermicularis should be considered. In this case, E vermicularis presented as acute and chronic salpingitis in a patient who had had E vermicularis-related appendicitis 5 years earlier.

Adult↗