Enterobius vermicularis in Brazil: An integrative review

ABSTRACT Enterobius vermicularis, an intestinal helminth, is transmitted through the ingestion of eggs found in food, water, dust, or other fomites, including infected individuals. This review aimed to examine the frequency and distribution of E. vermicularis infections in Brazil between 1991 and 2022. The conducted bibliographic survey revealed that the frequency of E. vermicularis infections in Brazil ranged from 0.1 to 26.1%, depending on factors such as population ethnicity, individual age group, geographic area, time frame, and diagnostic method. However, these findings were based on a limited number of publications, suggesting that the actual prevalence rates of E. vermicularis infection may still be unknown and potentially underestimated.

Prevalence and influencing factors of Enterobius vermicularis infections among children in Fanxian County of Henan Province in 2019 / 中国血吸虫病防治杂志

Objective To investigate the prevalence and influencing factors of Enterobius vermicularis infections among children in Fanxian County, Henan Province in 2019, so as to provide insights into the management of enterobiasis. Methods Five kindergartens were selected in urban and rural areas of Fanxian County, Henan Province using the stratified sampling method in 2019, and a census of E. vermicularis infections was performed among all children in the kindergartens. E. vermicularis eggs were detected using adhesive and scotch cellophane-tape anal swab methods, and the basic characteristics of children and their families, health habits and the kindergartens’ information were investigated with questionnaires. Logistic regression analysis was used to investigate the risk factors and protective factors of pinworm infection in children. Results A total of 671 children were tested, and the mean prevalence of E. vermicularis infections was 15.50% (104/671). The prevalence of E. vermicularis infections was higher among children in rural kindergartens (28.13%, 72/256) than in urban kindergartens (7.71%, 32/415) (χ2 = 50.380, P < 0.01), and greater in private kindergartens (32.26%, 60/186) than in public kindergartens (9.07%, 44/485) (χ2 = 55.183, P < 0.01). There was no gender-specific prevalence of E. vermicularis infections among children (χ2 = 1.442, P > 0.05), and the prevalence of E. vermicularis infections presented a tendency towards a rise with age (χ2trend = 8.373, P < 0.05) and school grade (χ2trend = 30.274, P < 0.05). Logistic regression analysis identified rural kindergartens and high grades as risk factors, and separate washing of children’s and adults’ cloths, frequent bathing and frequent dinnerware disinfection in kindergartens as protective factors for E. vermicularis infections among children. In addition, there was no significant difference in the detection of E. vermicularis infections among children by using adhesive (73.08%, 76/104) and scotch cellophane-tape anal swab methods (56.73%, 59/104) (χ2 = 3.959, P > 0.05). Conclusions The prevalence of E. vermicularis infection is high among children in Fanxian Country, Henan Province. Health education and surveillance of enterobiasis are required to be intensified among children in rural kindergartens and senior grades and their parents and teachers.

Surveillance of Enterobius vermicularis infections among children in Shandong Province from 2016 to 2020 / 中国血吸虫病防治杂志

Objective To investigate the prevalence and changing trend of Enterobius vermicularis infections among children in Shandong Province, so as to provide the scientific evidence for the adjustment and development of the enterobiasis control strategy. Methods Soil-borne nematodiasis surveillance sites were assigned in 51 counties (districts, cities) in Shandong Province from 2016 to 2020, and the E. vermicularis infections were detected using a modified Kato-Katz technique and the cellophane tape method among children at ages of 3 to 9 years living in these surveillance sites. The epidemiological profiles of E. vermicularis-infected children were descriptively analyzed. Results A total of 5 060 children at ages of 3 to 9 years were detected in 51 soil-borne nematodiasis surveillance sites in Shandong Province from 2016 to 2020, and the overall prevalence of E. vermicularis infections was 2.23%. The annual prevalence of E. vermicularis infections was 3.99% (26/651), 1.70% (14/824), 0.96% (8/837), 2.90% (45/1 552) and 1.67% (20/1 196) from 2016 to 2020, respectively, with a significant difference detected among years ( χ2 = 21.455, P < 0.01). The prevalence of E. vermicularis infections was 1.25% (15/1 198), 1.85% (14/755), 3.18% (84/2 640) and 0 (0/467) among children from central, eastern, southern and northern Shandong Province (χ2 = 27.326, P < 0.01). In addition, there was no significant difference in the prevalence of E. vermicularis infections between male (1.98%, 56/2 831) and female children (2.56%, 57/2 229) (χ2 = 1.916, P > 0.05); however, there was age-specific prevalence of E. vermicularis infections among children (χ2 = 16.448, P < 0.05), with the greatest prevalence detected among children at ages of 6 years (3.18%, 25/786), and the lowest prevalence seen among children at ages of 3 years (0.75%, 6/800). Conclusions The prevalence of E. vermicularis infections remained at a medium level among children at ages of 3 to 9 years in Shandong Province from 2016 to 2020, with region-specific prevalence found across the province. An integrated strategy is required for enterobiasis control.

Enterobius vermicularis infection in Guiyang City, Guizhou Province: a case report / 中国血吸虫病防治杂志

The report presents a case with Enterobius vermicularis infections in Guiyang City, Guizhou Province, aiming to strengthen the attention to parasitic infections.

Baja prevalencia de Enterobius vermicularis en niños de los "Centros infantiles del Buen Vivir" Cantón Jipijapa, Ecuador / Low prevalence of Enterobius vermicularis in children of "Centros infantiles del Buen Vivir" Canton Jipijapa, Ecuador

Enterobius vermicularis es un helminto que afecta principalmente a niños. El objetivo del estudio fue determinar la prevalencia de E. vermicularis en 70 preescolares de Jipijapa, Ecuador. Se identificó un solo niño con el helminto; esto puede atribuirse al tratamiento con Albendazol que los niños escolarizados reciben regularmente en el país

Enterobius vermicularis, is a helminth that mainly affects children. The objective of the study was to determine the prevalence of E. vermicularis in 70 preschoolers in Jipijapa, Ecuador. A single child was identified with the helminth; this can be attributed to the Albendazole treatment that school children receive regularly in the country

Prevalence and genotype distribution of Enterobius vermicularis among kindergarteners in Shiraz and Khorramabad cities, Iran

Objective: To study the prevalence and genotype of Enterobius (E.) vermicularis from adhesive tape samples in the cities of Shiraz and Khorramabad, Iran. Methods: A total of 1 000 adhesive tape samples from kindergartens in Shiraz (500 samples) and Khorramabad (500 samples) were collected and tested using a microscope to find E. vermicularis egg/s. A questionnaire was filled out for each sample. In order to characterize the genotype of E. vermicularis, the PCR-sequencing method of the mitochondrial cytochrome C oxidase subunit 1 (cox1) gene was used. Genomic DNA was extracted from the positive scotch tape samples of E. vermicularis. The cox1 gene was amplified by the polymerase chain reaction and sequenced. The sequence data were aligned using the BioEdit software and compared with the published sequences in GenBank. Phylogenetic analysis was performed using the maximum likelihood method. Results: The parasitological method showed that 15 out of the 500 samples from Shiraz (3.00%) and 12 out of the 500 samples from Khorramabad (2.40%) were infected with E. vermicularis eggs. BLAST analysis indicated that the sequenced isolates belonged to E. vermicularis genotype B while three different haplotypes were also identified. Conclusions: This is the first study on genotyping E. vermicularis in the cities of Shiraz and Khorramabad. Considering the public health importance of the disease, further studies are necessary to characterize the genotype of E. vermicularis in human populations from other regions of Iran.

Prevalence and genotype distribution of Enterobius vermicularis among kindergarteners in Shiraz and Khorramabad cities, Iran

Objective: To study the prevalence and genotype of Enterobius (E.) vermicularis from adhesive tape samples in the cities of Shiraz and Khorramabad, Iran. Methods: A total of 1 000 adhesive tape samples from kindergartens in Shiraz (500 samples) and Khorramabad (500 samples) were collected and tested using a microscope to find E. vermicularis egg/s. A questionnaire was filled out for each sample. In order to characterize the genotype of E. vermicularis, the PCR-sequencing method of the mitochondrial cytochrome C oxidase subunit 1 (cox1) gene was used. Genomic DNA was extracted from the positive scotch tape samples of E. vermicularis. The cox1 gene was amplified by the polymerase chain reaction and sequenced. The sequence data were aligned using the BioEdit software and compared with the published sequences in GenBank. Phylogenetic analysis was performed using the maximum likelihood method. Results: The parasitological method showed that 15 out of the 500 samples from Shiraz (3.00%) and 12 out of the 500 samples from Khorramabad (2.40%) were infected with E. vermicularis eggs. BLAST analysis indicated that the sequenced isolates belonged to E. vermicularis genotype B while three different haplotypes were also identified. Conclusions: This is the first study on genotyping E. vermicularis in the cities of Shiraz and Khorramabad. Considering the public health importance of the disease, further studies are necessary to characterize the genotype of E. vermicularis in human populations from other regions of Iran.

Prevalencia y variables asociadas a la transmisión de Enterobius vermicularis en niños en edad preescolar y escolar en dos municipios de Cundinamarca, Colombia / Prevalence and Variables Associated with Enterobius vermicularis Transmission in Preschool and School Children in Two Municipalities of Cundinamarca, Colombia / Prevalência e variáveis associadas à transmissão de Enterobius vermicularis em crianças pré-escolares e escolares em dois municípios de Cundinamarca, Colômbia

Resumen: El presente artículo busca determinar la prevalência de Enterobius vermicularis y variables asociadas en población preescolar y escolar del área urbana del municipio de Chaguaní y dos jardines en Cajicá, Cundinamarca, Colombia. Para esto se realizó un estudio descriptivo, de corte transversal con toma única de muestra en la población mencionada en 44 y 42 participantes, respectivamente, cuyos padres aceptaron participar voluntariamente firmando un consentimiento para desarrollar una encuesta epidemiológica estructurada, que indagó condiciones socioeconómicas, epidemiológicas y medioambientales. El diagnóstico parasitológico se realizó con la técnica de Graham. Los participantes se distribuyeron por grupo etario: el primero estuvo conformado por 76 niños (88,4 %) con edades entre 1,5 y 8 años; el segundo, por 7 niños mayores de 8 años (8,1%), y el tercero, por 3 niños (3,5 %) sin información al respecto. La variable con significancia estadística (p≤0.05) y posible asociación protectora fue la asistencia médica trimestral y como posible riesgo el contacto con fómites. Así, se encontró que la oxiuriasis es una parasitosis prevalente en la población preescolar y escolar, asociada a condiciones higiénico-sanitarias deficientes.

Abstract: This article seeks to determine the prevalence of Enterobius vermicularis and associated variables in preschool and school population in the urban area of the municipality of Chaguaní and two kindergartens in Cajicá, Cundinamarca, Colombia. To this end, a descriptive, cross-sectional study was conducted by taking a single sample from 44 and 42 participants from such populations, respectively, whose parents agreed to participate voluntarily by signing a consent to respond to a structured epidemiological survey. This survey inquired into their socioeconomic, epidemiological, and environmental conditions. Parasitological diagnosis was made using Graham's test. Participants were distributed by age group: the first one was made up of 76 children (88.4%) between 1.5 and 8 years old; the second one, of seven children (8.1 %) over 8; and the third one, of three children (3.5 %) with no age information. A statistically significant variable (p ≤ 0.05) and possible protection factor was quarterly medical care. A possible risk factor was contact with fomites. Therefore, it was found that oxyuriasis is a prevalent form of parasitosis in preschool and school population associated with poor hygienic and sanitary conditions.

Resumo: Este artigo pretende determinar a prevalência de Enterobius vermicularis e de variáveis associadas em população pré-escolar e escolar da área urbana do município de Chaguaní e de dois jardins de infância em Cajicá, Cundinamarca, Colômbia. Para isso, foi realizado um estudo descritivo, de corte transversal, com tomada única de amostras na população em 44 e 42 participantes, respectivamente, cujos responsáveis aceitaram a participar de forma voluntária e assinaram o consentimento para responder a um questionário epidemiológico estruturado, que indagou sobre condições socioeconómicas, epidemiológicas e meio ambientais. O diagnóstico parasitológico foi realizado com a técnica Graham. Os participantes foram distribuídos por grupo de idade: o primeiro formado por 76 crianças (88,4%) entre 1,5 e 8 anos; o segundo, por 7 crianças com maios de 8 anos (8,1%), e o terceiro, por 3 crianças (3,5%) sem informação a respeito. A variável com significância estatística (p≤0,05) e possível associação protetora foi a assistência médica trimestral e, como possível risco, o contato com fômites. Assim, foi verificado que a oxiuriase é uma parasitose prevalente na população pré-escolar e escolar, associada a condições higiênico-sanitárias deficientes.

Surveillance of soil-borne nematodiasis in Danyang City from 2012 to 2018 / 中国血吸虫病防治杂志

Objective To monitor the epidemic status of human soil-borne nematodiasis in Danyang City, so as to provide scientific evidence for formulating control measures. Methods The soil-borne nematode infections were tested using a modified Kato-Katz technique among residents aged more than 3 years living in Danyang City from 2012 to 2018, and the Enterobius vermicularis eggs were detected using the transparent adhesive tape anal swab method among children at ages of 3 to 12 years. Results A total of 13 540 residents were monitored for soil-borne nematode infections from 2012 to 2018, and the prevalence of human soil-borne nematode infections was 0.45%. The prevalence of Ascaris lumbricoides, Trichuris trichura and Enterobius vermicularis infections was 0.32%, 0.12% and 0.01%, respectively, and a single parasite infection was predominant. There were significant differences in the prevalence of soil-borne nematode (χ2 = 42.610, P < 0.05), A. lumbricoides (χ2 = 26.276, P < 0.05) and T. trichura (χ2 = 20.692, P < 0.05). The prevalence of human soil-borne nematode infections was 0.45% in males and 0.47% in females, and lower prevalence was found in local residents than in floating population (0.28% vs. 0.66%; χ2 = 10.561, P < 0.05). The highest infection was found in subjects at ages of 31 to 40 years (0.59%), followed by in subjects at ages of 41 to 50 years (0.56%), and the lowest infection was seen in children at ages of 3 to 5 years (0.27%). In addition, the prevalence of human soilborne nematode infections varied significantly in occupation (χ2 = 75.692, P < 0.05), with the highest infection seen in boatmen. Among the 5 078 children monitored, the prevalence of E. vermicularis infection was 0.37%, and the prevalence of E. vermicularis infection varied significantly in year (χ2= 15.466, P < 0.05). Conclusion The human soil-borne nematode infection is at a low level in Danyang City; however, the surveillance of soil-borne nematodiasis remains to be intensified in children living in rural areas and immigrant populations.

Surveillance of soil-borne nematodiasis in Danyang City from 2012 to 2018 / 中国血吸虫病防治杂志

Objective To monitor the epidemic status of human soil-borne nematodiasis in Danyang City, so as to provide scientific evidence for formulating control measures. Methods The soil-borne nematode infections were tested using a modified Kato-Katz technique among residents aged more than 3 years living in Danyang City from 2012 to 2018, and the Enterobius vermicularis eggs were detected using the transparent adhesive tape anal swab method among children at ages of 3 to 12 years. Results A total of 13 540 residents were monitored for soil-borne nematode infections from 2012 to 2018, and the prevalence of human soil-borne nematode infections was 0.45%. The prevalence of Ascaris lumbricoides, Trichuris trichura and Enterobius vermicularis infections was 0.32%, 0.12% and 0.01%, respectively, and a single parasite infection was predominant. There were significant differences in the prevalence of soil-borne nematode (χ2 = 42.610, P < 0.05), A. lumbricoides (χ2 = 26.276, P < 0.05) and T. trichura (χ2 = 20.692, P < 0.05). The prevalence of human soil-borne nematode infections was 0.45% in males and 0.47% in females, and lower prevalence was found in local residents than in floating population (0.28% vs. 0.66%; χ2 = 10.561, P < 0.05). The highest infection was found in subjects at ages of 31 to 40 years (0.59%), followed by in subjects at ages of 41 to 50 years (0.56%), and the lowest infection was seen in children at ages of 3 to 5 years (0.27%). In addition, the prevalence of human soilborne nematode infections varied significantly in occupation (χ2 = 75.692, P < 0.05), with the highest infection seen in boatmen. Among the 5 078 children monitored, the prevalence of E. vermicularis infection was 0.37%, and the prevalence of E. vermicularis infection varied significantly in year (χ2= 15.466, P < 0.05). Conclusion The human soil-borne nematode infection is at a low level in Danyang City; however, the surveillance of soil-borne nematodiasis remains to be intensified in children living in rural areas and immigrant populations.

Investigation of Enterobius vermicularis infection in children in Jiangxi Province in 2014 / 中国血吸虫病防治杂志

To know the status of Enterobius vermicularis infection in children in Jiangxi Province in 2014, so as to provide the evidence for the formulation of prevention and control measures.A survey was performed according to the scheme of the 3rd Principal Human Parasites of Jiangxi Province in 2014. Based on the ecological regions, a stratified cluster sampling method was applied by the economic and geographic situation. There were 84 survey sites from 28 counties, and the basic data were also collected in the different investigation sites, and the round-end tube adhesive cellophane anal swab was used to examine E. vermicularis eggs for the children aged 3–6 years.A total of 1 486 children aged 3-6 years were detected, the E. vermicularis infection rate was 13.73% (204/1 486), and the infection rates were 13.89% (114/821) and 13.53% (90/665) in the male and female, respectively. The infection rate in the different age groups showed a gradual rise then fall trend, the lowest infection rate was 10.05% (38/378) in the 3-year age group, and the highest infection rate was 18.24% (81/444) in the 5-year age group. The infection rates in the high, medium and low-income survey sites were 13.79% (87/631), 17.23% (51/296), and 11.81% (66/559), respectively. The E. vermicularis infection rates in the 4 ecological regions were from 12.34% to 17.74%, but there was no significant difference among the different ecological regions (P > 0.05).The status of E. vermicularis infection in children in Jiangxi Province is relatively serious, and therefore, the parasitic disease control sectors should continue to strengthen the monitoring and control work of E. vermicularis infection in children.

Prevalence of Enterobius vermicularis among Children in Iran: A Systematic Review and Meta-analysis

OBJECTIVES: Enterobius vermicularis is a parasitic disease that is common in crowded areas such as schools and kindergartens. Primary investigations of electronic evidence have reported different prevalences of E. vermicularis in Iran. Therefore, we aimed to estimate the total prevalence of this infection among Iranian children using a meta-analysis. METHODS: Relevant studies were identified in national and international databases. We selected eligible papers for meta-analysis after investigating titles, abstracts, and full texts; assessing study quality; and applying inclusion/exclusion criteria. Data were extracted by two independent researchers. The results were combined using a random effects model in Stata v. 11 software. RESULTS: Among 19 eligible articles including 11,676 participants, the prevalences of E. vermicularis among all children, boys, and girls were 1.2%–66.1%, 2.3%–65.5%, and 1.7%–65.5%, respectively. Pooled prevalences (95% confidence interval) of E. vermicularis among all children, boys, and girls were 17.2% (12.6%–21.8%), 17.2% (12.6%–21.8%), and 16.9% (9.03%–24.8%), respectively. CONCLUSION: This meta-analysis showed that a great majority of Iranian children are infected with E. vermicularis, possibly due to poor public health.

Apendicitis y parásitos: a propósito de 2 casos / Appendicitis and parasites: Reporting of 2 cases

Objetivo: Enfatizar la importancia de sospechar esta etiología en la patogenia de la apendicitis aguda, especialmente en pacientes procedentes de países endémicos. Casos clínicos: Presentamos dos casos, con cursos clínicos divergentes.

Aim: We would like to emphasize the importance of having a high grade of suspect about the parasitic etiology of appendicitis acute, especially in patients from endemic countries. Case report: We present two cases with divergent clinical evolution.

Prevalence and associated factors of Enterobius vermicularis infection in children from a poor urban community in Sri Lanka: a cross-sectional study.

Background: Enterobiasis (pin worm infection) is caused by Enterobius vermicularis (E. vermicularis). According to World Health Organization, over a billion people are infected worldwide. A cross-sectional study was carried out to determine the prevalence and factors associated with the transmission of E. vermicularis infection in children from a poor urban community in Sri Lanka. Methods: This study was conducted in the Hantana Tea Estate (HTE) in Kandy district of Sri Lanka. A cross-sectional study was conducted from September to December 2013. After obtaining informed consent, data (socio economic data, educational level, deworming history, conditions and availability of the sanitary and housing facilities) were collected using an interviewer administered questionnaire. Clean rectangular (2x3 cm) transparent adhesive cellulose tapes (scotch tape) were distributed among all participants to collect samples. Results: Out of the 204 children 65 (31.9%) were positive for E. vermicularis eggs. Children aged 1-3 years showed the highest prevalence rate (37.5%). The risk factors significantly associated with E. vermicularis infection were, a lack of parental knowledge about pinworm infection (p<0.001), hand washing only with water before a meal (p< 0.001) and after defecation (p<0.029) and de-worming period more than three months (p<0.001). Age, sex, family clusters, sucking fingers, toilet facilities and socioeconomic status were not found to be significantly associated with the infection (p>0.05). Conclusion: This study showed a high prevalence of enterobiasis in children in Hantana Tea Estate indicating a high level of transmission. A lack of parental knowledge and poor personal hygiene were significantly associated with the transmission of E. vermicularis. Furthermore, the present study recommends mass medication of residents and their contacts to reduce the transmission of pin worm infection could be suggested. Further, it seems that singledose treatment may not be effective against enterobiasis. Therefore, treatment should be repeated 2 to 3 times at 3 weeks intervals.

Enterobíase: aspectos atuais / Enterobiasis: current issues

Justificativa e objetivos: A enterobíase - oxiuríase - é uma parasitose intestinal causada pelo nematódeo Enterobius vermicularis. Trata-se de infecção de grande importância na prática clínica por causar parasitose intestinal e estar envolvida com infecções do trato urinário. O objetivo do manuscrito é apresentar os principais aspectos epidemiológicos, clínicos e terapêuticos relacionados com a enterobíase. Conteúdo: Foram utilizadas as palavras enterobíase e Enterobius vermicularis como descritores na pesquisa de dados nas bases SciELO e Pubmed, assim como em livros-texto relacionados com o tema. A prevalência estimada da infecção no Brasil é de 5,9%, fortemente associada a fatores ambientais, culturais e sociais. O quadro clínico predominante compreende o prurido anal e infecções urinárias em meninas. Possui evolução benigna, com raras complicações, cujo tratamento apresenta eficácia na grande maioria dos casos. Conclusão: Embora possua excelente prognóstico, a disseminação do conhecimento dos aspectos clínicos, epidemiológicos e terapêuticos da enterobíase é essencial para sua melhor abordagem pelos profissionais médicos.

Prevalence and risk factors of Enterobius vermicularis among preschool chil-dren in kindergartens in Luohu District,Shenzhen City / 中国血吸虫病防治杂志

Objective To understand the prevalence and risk factors of Enterobius vermicularis among preschool children in kindergartens in Luohu District Shenzhen City. Methods A total of 489 children in 6 kindergartens were selected by the stratified sampling method and investigated for E. vermicularis infection by the cellophane anal swab technique. The information of sanitary condition of the kindergartens personal hygiene and family hygiene were investigated by questionnaire. Results The infection rate of E. vermicularis was 10.2% 50/489 . The single factor analysis indicated that the following factors might re?lated to the infection the different classes of kindergartens grades ground of bed room private toilet types of taps and beds bed management education levels of parents frequency of shower and washing anus and washing hands before meal and after WC. The multivariate Logistic analysis indicated that the bed management education level of mothers frequency of washing anus and private toilet were independent risk factors for E. vermicularis infection. Conclusion To control the infection of E. vermicularis the circumstance and management of kindergartens parents knowledge of E. vermicularis infection and chil?dren s healthy habit need improve.

High Prevalence of Enterobius vermicularis Infection among Schoolchildren in Three Townships around Yangon, Myanmar

In order to determine the status of Enterobius vermicularis infection among schoolchildren in suburban areas of Myanmar, 761 primary schoolchildren in 3 different townships around Yangon City were subjected to a survey using cello-tape anal swabs. The subjected schoolchildren were 383 boys and 378 girls who were 5-7 years of age. Only 1 anal swab was obtained from each child. The overall egg positive rate of E. vermicularis was 47.2% (359 positives), and sex difference was not remarkable (48.6% in boys and 45.8% in girls). However, the positive rate was the highest in South Dagon (54.6%) followed by Hlaing Thayar (43.8%) and North Dagon (34.8%). This difference was highly correlated with the living standards of the people in each township. Nucleotide sequence of the 5S rDNA from the eggs on the cello-tape (2 children) revealed 99.7% identity with that of E. vermicularis reported in GenBank. The results indicated that E. vermicularis infection is highly prevalent among primary schoolchildren around Yangon, Myanmar.

Monitoring of Enterobius vermicularis infection among children from 2006 to 2010 and SWOT analysis / 中国血吸虫病防治杂志

Objective To understand the infection status and variation tendercy of Enterobius vermicularis infection among children at national monitoring spots of soil-transmitted nematodosis from 2006 to 2010,and master the epidemic regularity,so as to provide the evidence for making control strategy and evaluating the control effect. Methods A total of 22 national monitor-ing spots of soil-transmitted nematodosis were established according to the National Surveillance Program of Soil-Transmitted Ne-matodiasis(Trial),and the children aged 3-12 years were examined through adhesive cellophane anal swabs,then the infec-tion rates of children with different ages,genders,nationalities and education levels were analyzed. In addition,the advantage, disadvantage,opportunity and threat of the monitoring work were analyzed by SWOT analysis. Results A total of 17 068 chil-dren were examined in 22 monitoring spots from 2006 to 2010,and 1 363 of them were found being infected with E. vermicu-laris,the average infection rate was 7.99%,and the infection rates of male and female children were 7.39%and 8.70%,respec-tivel;the average infection rates in each year were 10.01%,9.68%,7.41%,6.96%and 6.57%,respectively. From 2006 to 2009,the infection rates of E. vermicularis in children in Fujian Province was the highest,which were 56.15%,53.42%, 37.82%and 49.53%,respectively,but in 2010,the infection rate in Guangdong Province(46.06%)was the highest. The fur-ther analysis demonstrated that the female children,3-6 age group,Li nationality and children at kindergarten stage had relative-ly high infection rates. The SWOT analysis showed that the advantage of E. vermicularis monitoring in China was its wide cover-age and continuity,and the disadvantage was the relatively small investment from the government,the opportunity was that the national monitoring spot could drive the monitoring work at the provincial,county and other levels,and the threat was that the work was paid less and less attention to in recent years. Conclusion Though the infection rate of E. vermicularis in children at national monitoring spots of soil-transmitted nematodosis has been decreased year by year,high-endemic areas still exist,and thus the work on enterobiasis control and prevention still needs to be strengthened.

Ovos de enterobius vermicularis em salas de espera e banheiros de unidades básicas de saúde (UBS) do município de Nova Serrana-MG: contribuições para o controle / Enterobius vermicularis eggs in waiting rooms and bathrooms basic health units (BHU) in the municipality of Nova Serrana-MG: contributions to control

Neste trabalho, avaliou-se, utilizando a técnica de Graham (1941), a presença de ovos de helmintos intestinais em amostras coletadas em objetos de cinco Unidades Básicas de Saúde (UBS) da cidade de Nova Serrana-MG. No total de oito coletas, foram amostrados, nas recepções, 40 mesas de atendimento e 40 assentos de cadeiras e, nos banheiros, 64 maçanetas internas e 64 maçanetas externas de portas. Todas as lâminas foram analisadas por microscopia óptica nos aumentos de 10X e 40X no Laboratório de Microscopia da FUNEDI/UEMG e reexaminadas no Laboratório de Helmintologia e Malacologia Médica do Centro de Pesquisas René Rachou (FIOCRUZ-Minas). Os resultados indicaram a presença de ovos de Enterobius vermicularis, em sua maioria, viáveis, sendo os percentuais de ocorrência calculados por meio de proporção simples. Na recepção, a porcentagem de contaminação foi de 25,0 por cento nas mesas de atendimento e de 17,9 por cento no assento das cadeiras; nos banheiros, 35,7 por cento das maçanetas internas e 21,4 por cento das maçanetas externas apresentaram ovos. Não foram encontrados ovos e larvas de outros helmintos, apenas grãos de pólen, fibras vegetais e esporos de fungos. Foram realizadas palestras direcionadas aos funcionários destas UBS para apresentar-lhes os resultados e discutir medidas para evitar a contaminação de pessoas que frequentam e trabalham nestes locais. Os dados evidenciaram que as salas de espera das UBS podem ser importantes veículos de dispersão e contaminação de enteroparasitos. Medidas de educação em saúde são importantes e devem ser realizadas entre os usuários e funcionários dos postos, pois levam as pessoas a conhecer o problema, mudar seus hábitos e discutir soluções para prevenção e controle desta e de outras endemias...

In this study, the presence of intestinal helminth eggs was evaluated in samples collected from five Basic Health Units (BHU) using the Graham’s technique (1941), in the city of Nova Serrana (MG). In the total of 8 collections, 40 chair seats and 40 attendance tables were sampled in the reception and, on the toilet doors, 64 internal door handles and 64 external door handles. All the slides were analyzed by light optic microscopy with 10X and 40X magnifications in the Microscopy Laboratory FUNEDI / UEMG and re-examined in the Medical Malacology and Helminthology Laboratory of the Research Center René Rachou (FIOCRUZ-Minas). The results indicated the presence of Enterobius vermicularis eggs, mostly viable, with infection rates calculated by simple proportion. In the reception the contamination percentage was 25.0 percent on attendance tables and 17.9 percent on chair seats; in the toilets, 35.7 perecent of internal door handles and 21.4 percent of external door handles presented eggs. There were no eggs and larvae of other helminths, only pollen grains, vegetable fibers and fungal spores. Lectures were held with employees of BHU to present the results and discuss measures that can be taken to prevent contamination of people who attend and work at these sites. The data showed that the BHU toilets and waiting rooms can be important vehicles of dispersal and contamination with enteroparasites. Health education measures are important and must be undertaken among the health center users and employees as they lead people to understand the problem, change their habits and discuss solutions to prevent and control this and other diseases...

Environmental Factors Related to Enterobiasis in a Southeast Region of Korea

Pinworm infection can occur through contact with contaminated surfaces followed by ingestion or even through inhalation of infective eggs. We have limited information regarding environmental contamination by eggs of Enterobius vermicularis. In order to determine environmental risk factors associated with the rate of E. vermicularis infection, we investigated possible environmental risk factors using a questionnaire from 46 kindergartens in 3 different cities of the southeast area of Korea. In total, using the cellotape anal swab technique, 3,422 children were examined for E. vermicularis infection. We evaluated E. vermicularis egg of books, educational materials, toys, room door handles, dusts of window edges, desks, chairs, tables, and dusts of classrooms. The overall egg-positive rate for E. vermicularis was 6.0%, and the prevalence of enterobiasis in each kindergarten ranged between 0% and 16.9%. We found that 78.9% of egg positive kindergartens were managed by private foundations, which was significantly higher, compared with kindergartens managed by public foundations or the nation. Compared with public or national kindergartens, most private kindergartens were located in residential areas and the number of children in these areas was significantly higher. In conclusion, numbers of children in kindergartens was found to be an environmental risk factor associated with transmission of enterobiasis in Korea.