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Epidemiology of Enterobius vermicularis infection among orphans in orphanages in Taipei City.

Children of eight orphanages at the different districts in Taipei were examined with scotch adhesive tape method and flotation of saturated NaCl solution from Sept. 1973 to Jan. 1974. The results are summarized as following: General incidence of Enterobius verminularis was 74.40% in 461 cases examined, male 76.45% (224/293), female 70.83% (119/168). There was no significant statistical difference between the male and female. Incidence of Enterobius among the orphanages was 83.33% (25/30) in Po-Ai, Fu-Ann 82.61% (38/46), Ta-Tung 82.43% (61/74), Hau-Sen 77.25% (34/44), Chung-I 75.00% (51/68), Jen-Ai 72.97% (23/37), Ti-Hwei 72.50% (29/40) and Sen-Tao 63.93% (78/122). There were no significant statistical differences among the orphanages except the differences between Sen-Tao and Ta-Tung; Sen-Tao and Fu-Ann, Sen-Tao and Po-Ai. Incidence of Enterobius according to age-groups: The highest rate was 79.34% (242/305) in primary school group followed by 70.00% (21/30) in kindergarten group, 64.40% (73/114) in Junior high school and the lowest was 63.64% (7/11) in nursery group. There was a significant statistical difference between primary school group and junior school group. (Table 3) The larger the space for the children's free activity was the lower the incidence of Enterobius, and the smaller space resulted in the higher incidence. The distribution of Enterobius ova in the different body parts of the 461 orphans was 80.91% (373/461); The highest 74.40% (343/461) at perianal area and the lowest 11.93% (55/461) at ears. The incidence of Enterobius on the various objects in the orphanages was found as the following: 85.71% (6/7) on bed pans, 83.67% (333/398) on linens, 78.46% (51/65) on w. c. appartus, 77.39% (89/115) on specimens of dust, 13.33% (1/15) on stairrails 8.04% (32/39) on bedposts, 7.33% (11/150) on closets, 4.24% (5/118) on desks and 3.64% (2/55) on toys.

Adolescent

[Enterobius gregorii Hugot, 1983 recovered from school children in Kangwon-Do, Korea].

Hugot (1983), Hugot and Tourte-Schaefer (1985) reported that nematodes of the genus Enterobius causing human enterobiasis might be classified into two different species on the basis of the size and shape of spicule in male worms. E. gregorii Hugot, 1983 has significantly shorter spicules in males than those in E. vermicularis. A total of 194 male Enterobius were collected from 17 schoolchildren by anthelmintics at Wonju, Kangwon-do. The sizes of spicules and morphologies were comparatively observed. Two different types of spicules in male Enterobius were also observed in Korea. Out of 112 male worms observed, the percentages of E. gregorii (short-spicule type) and E. vermicularis (long-spicule type) were 23.2% and 76.8%, respectively.

Age Factors

Enterobius egg granuloma of the vulva and peritoneum: review of the literature.

Two cases of Enterobius granuloma containing eggs only are reported. The first case involved the vulva, where no such granuloma has been reported previously. The coexistence of peritoneal granuloma and rectal adenocarcinoma in the second case suggests the possibility of direct penetration of the damaged colonic wall by the parasite, as emphasized by several previous reports of neoplastic involvement and perforation of the intestinal wall in cases of ectopic infections. The diagnostic criteria of Enterobius eggs granuloma, which might be a diagnostic dilemma for pathologists who are not familiar with such criteria, are described herein.

Adult

Unilateral salpingitis due to Enterobius vermicularis.

A case of perforated unilateral salpingitis in which Enterobius vermicularis ova were identified in the inflammatory process is reported. Arguments for considering the parasite to be of etiologic significance in the production of the pathologic changes and clinical symptoms are presented. The infrequent occurrence of symptoms associated with ectopic localization of Enterobius vermicularis is emphasized by a review of the literature.

Adult

Perianal mass and recurrent cellulitis due to Enterobius vermicularis.

A unique case of enterobiasis presenting as recurrent cellulitis and a perianal mass in a six-year-old girl is reported. Complicated perianal lesions due to Enterobius are unusual. Only 10 previous cases are known, with unclear pathogenesis in most of them, although mucosal breaches and perianal crypt or gland entry have been postulated. The association of the mass in this case with a deep crypt, and the histopathologic finding of squamous epithelium focally surrounding the granulomatous reaction to the Enterobius eggs suggest that the worm entered the perianal tissues via a crypt. Local secondary bacterial infection can cause significant morbidity. Surgical excision of such granulomatous mass lesions is necessary in symptomatic or complicated cases.

Anus Diseases

Enterobius vermicularis infestation and secondary enuresis.

We recently saw 5 young girls with the sudden onset of frequency and enuresis secondary to enterobius vermicularis. All children had sterile urine and 4 had been unjustly considered neurotic. Anthelmintic therapy resulted in an immediate cure in all 5 cases. More frequent diagnosis and treatment of this common ailment would do a great service to affected girls and their families.

Anthelmintics

Appendicitis and Enterobius vermicularis.

A histologic examination was made of all appendices delivered to the Dept. of Pathology, Sundby Hospital, Copenhagen, in 1980-87, to ascertain the incidence of Enterobius vermicularis (pinworm) and the possible relation to acute appendicitis. Altogether 2267 appendices were examined, and E. vermicularis was identified in 4.1%. The highest incidence occurred in the 6- to 15-year age group. Infestation was more frequent in female than in male appendices, with the ratio of 1 male to 1.8 females, except in the 11- to 15-year age group, in which the ratio was 1. There was a highly significant difference in the incidence of E. vermicularis in normal appendices and in inflamed appendices, which may indicate that 1) the presence of E. vermicularis in the appendix can give the symptoms of acute appendicitis, or 2) E. vermicularis leaves or does not enter an inflamed appendix.

Adolescent

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

[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

[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

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

The pinworm, Enterobius vermicularis.

The pinworm, Enterobius vermicularis, is the most common intestinal parasite in the primary care setting, regardless of race, socioeconomic or cultural circumstances. This article discusses symptoms, diagnosis, and treatment.

Animals

[Enterobius vermicularis and pollen granules in cytologic gynecologic smears].

The presence of the eggs of Enterobius vermicularis in cytologic gynecological smears is described, as well as the granules of pollens whose presence in cytologic smears is of no significance from the clinical standpoint but they may become a diagnostic problem, because by their size and appearance they may at first sight misleadingly be considered as the eggs of a parasite.

Adult

[On the epidemiology of Dientamoeba fragilis Jepps and Dobell 1918. 4th communication: evidence of Dientamoeba fragilis in Enterobius eggs using isoelectric point determination].

By means of the method of determining the isoelectric point, the same conditions of absorption and stain intensity as in Dientamoeba cultivation forms were determined in cells found in Enterobius vermicularis eggs of Dientamoeba fragilis carried. By that way, identity of both stages, as well as function of pinworms as Dientamoeba fragilis vectors were confirmed.

Animals

Epididymitis from Enterobius vermicularis: case report.

A rare case of epididymitis caused by Enterobius vermicularis, a pinworm, is reported. A 52-year-old man underwent resection of the right epididymis and histological examination confirmed the diagnosis of pinworm infection by discovering parts of the body of the oxyurid in various sections.

Epididymitis

[Prevalence of Enterobius vermicularis infection and preventive effects of mass treatment among children in rural and urban areas, and children in orphanages].

An epidemiological study and mass treatments of Enterobius vermicularis infection among children near Wonju area of Kangwon province were carried out. The children were divided into 4 groups according to their residing localities; children in the mountainous area, rural area, urban area and in orphanage. They were examined by adhesive cellotape anal swab technique, and egg positive rates were obtained. The rates of egg reduction and re-infection rates after repeated mass treatments were also observed. The results obtained were as follows: 1. The overall egg positive rate of E. vermicularis in the first screening was 19.9% (251 out of 1,262 examinees; 19.7% in males and 20.1% in females). The positive rates were 13.0% in the mountainous area, 11.9% in the rural area, 15.1% in the urban (medium-sized) area and 61.9% in orphanages. 2. The highest positive rates were observed in the kindergarten children, and 1st and 2nd grade children of primary schools (26.2-32.2%), and the lowest rate (13.6%) in 6-year grade children of primary schools. 3. Cumulative detection rates from 3 repeated anal swabs at 4-5 days interval were higher (70.8%) than those from single anal swabs (50.0-59.2%). 4. Out of the examinees who showed the highest cumulative positive rate (70.8%), about 39.2% were consecutively positive in 3 anal swabs. Among different groups of children, the higher the total egg detection rates (87.5%), the higher the consecutive positive rates (71.9%). 5. A total of 2,609 (male: female = 1:12.4) worms were collected from 17 egg-positive cases treated with anthelmintics. The mean number of worms per child was 153 (range: 4-824).(ABSTRACT TRUNCATED AT 250 WORDS)

Child

Prevalence of Enterobius vermicularis amongst adults living in hostels by six successive day examination.

The prevalence of Enterobius vermicularis in four groups of adults, all trainee public health inspectors or public health nurses, aged 18-35 years and all living in hostels on campus was studied. The modified scotch tape technique was used and the subjects were taught to do the examination on themselves to detect the presence of eggs over a period of 6 successive mornings. Each was given an elaborately illustrated diagram on how and when to take the samples and given demonstration in groups. The samples were examined by trained people. Most of the subjects took samples on 6 consecutive days. Of the 119 subjects who returned samples, the overall prevalence of E. vermicularis was 9.2% and this was thought to be high for this particular age group. This was due to the higher prevalence (19.4%) in one group, whereas in the others the range was 3.5-8.0%. Based on the samples returned on the first day none of the subjects were detected as having the infection. After examination on 3 successive days (109 subjects) 10.1% were found to be infected (chi 2 = 10.704; d. f. = 1) and after examination on 6 successive days (72 subjects) 13.9% were found to be infected (chi 2 = 3.026; d. f. = 1). There was no significance between examination over 3 successive days and 6 consecutive days (chi 2 = 0.296; d. f. = 1). There was no difference in the prevalence between males and females.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent

[Vulvar granuloma due to Enterobius vermicularis (author's transl)].

The authors report a case of casual discovery of a enterobiasic vulvar granuloma arising on the left labia. This woman, living in Lille (France), 70 years had been treated by surgery and roentgentherapy for a well differentiated squamous carcinoma of the vulva. They consider the question of the genital localisation of Enterobius vermicularis in women and discuss the pathogenic hypothesis.

Aged