Intestinal parasitic infection among school children in Golestan province, Iran

Intestinal Parasitoses among Chepang and Musahar Community People of Makwanpur and Nawalparasi Districts of Nepal

BACKGROUND

Intestinal parasitosis is one of the commonly perceived serious problems often observed in children leading to high mortality. The objective of the study was to identify the intestinal parasites and study their prevalence in the two mostly disadvantaged communities (Musahar and Chepang) of Nepal.

METHODS

This was a cross-sectional study conducted in the Musahar and Chepang communities of Nepal from April to October 2019. A total of 205 random stool samples were collected in dry, clean and screw-capped plastic containers and mixed with 2.5% potassium dichromate solution. A pre-structured questionnaire was used to collect data on predisposing factors. The laboratory examination of the stool samples was done by direct microscopy and further confirmed by concentration methods (formalin ether sedimentation technique and flotation technique using Sheather's sugar solution), and modified acid-fast staining. Detection of eggs of Enterobius vermicularis was done by cellophane tape method.

RESULTS

The overall prevalence of intestinal parasitic infection was found to be 36.6%, with a similar prevalence in the Chepangs (39.8%) and in the Musahars (33.3%) (P > 0.05). The most predominant helminth was Ascaris lumbricoides (15.6%), while the most prevalent protozoan was Entamoeba histolytica/dispar (5.4%). The study also assessed a significant association between the prevalence of parasites with socio-demographic factors, types of drinking water consumption and sanitation habits of the people (P < 0.05).

CONCLUSION

The findings of the study suggest a need for formulating effective preventive and control strategies against intestinal parasitic infections along with the continuity of mass deworming program.

A Report of Health Related Anthropometric Indices in 2-5 Years Old Children of Golestan Province of Iran in 2015

Pediatric malnutrition is an enormous health issue all around the world and its distribution is different in distinct areas of a country. This study has been designed to report the anthropometric status and some socio-economic factors among 2–5 years old children from Golestan province of Iran to show a better view of pediatric health status and better planning for future actions. This study was carried out by clustered-randomized sampling method on 1,382 of 2–5 years old children in urban and rural areas of Golestan province. Anthropometric measurements were performed and World Health Organization child growth standards were used for further analyses. The prevalence of stunting in boys and girls were 7.4% and 7.5% in urban and 4.1% and 5.4% in rural areas. The prevalence of underweight in boys and girls were 6.9% and 4.7% in urban and 5.7% and 4.4% in rural areas. The prevalence of subjects being at risk for overweight were 17.8% and 11.7% in boys and girls, respectively, in urban areas and were 11.1% and 9.2% in rural areas, respectively. There was a marginally significant difference between urban boys and girls in terms of weight status (p = 0.067). In this study remarkably high prevalence of malnutrition, especially a high dominance of overweight, was reported in Golestan province of Iran. Follow-up investigation to identify the cause of malnutrition and to establish public health policies are needed to revise these health issues in Golestan province of Iran.

Molecular characterization of Hymenolepis nana based on nuclear rDNA ITS2 gene marker

Introduction

Hymenolepis nana is a zoonotic tapeworm with widespread distribution. The goal of the present study was to identify the parasite in the specimens collected from NorthWestern regions of Iran using PCR-sequencing method.

Methods

A total of 1521 stool samples were collected from the study individuals. Initially, the identification of hymenolepis nana was confirmed by parasitological method including direct wet-mount and formalin-ethyl acetate concentration methods. Afterward, PCR-sequencing analysis of ribosomal ITS2 fragment was targeted to investigate the molecular identification of the parasite.

Results

Overall, 0.65% (10/1521) of the isolates were contaminated with H. nana in formalin-ethyl acetate concentration. All ten isolates were succefully amplified by PCR and further sequenced. The determined sequences were deposited in GenBank under the accession numbers MH337810 -MH337819.

Conclusion

Our results clarified the presence of H. nana among the patients in the study areas. In addition, the molecular technique could be accessible when the human eggs are the only sources available to identify and diagnose the parasite.

Intestinal parasitic infections: Current prevalence and risk factors among schoolchildren in capital area of the Republic of Marshall Islands

Intestinal parasitic infections (IPIs) among schoolchildren in Republic of Marshall Islands (RMI) largely remains unknown, thus investigation on IPIs status to establish the baseline data is urgently needed. This cross-sectional study intended to investigate the current IPIs status and associated risk factors among schoolchildren at capital of RMI. Single stool sample from 400 schoolchildren (207 boys and 193 girls) aged 9.73±2.50 yrs old was examined by employing merthiolate-iodine-formaldehyde concentration method. Demographic characteristics, uncomfortable symptoms and risk factors were obtained by questionnaires investigation. The overall prevalence of IPIs in schoolchildren was 22.8% (91/400), of them 24.2% harbored at least 2 different parasites. Notably, the majority was infected by waterborne protozoan parasites (82.4%, 75/91). Nine different intestinal parasites have been identified, of which six were pathogenic including Hook worm, Trichuris trichiura, Enterobius vermicularis, Entamoeba histolytica/dispar, Giardia intestinalis and Blastocystis hominis. Schoolchildren who ever complained dizziness or headache showed a significant higher prevalence of pathogenic IPIs than those who did not (p<0.05). Schoolchildren who lived in urban area than rural area had higher chance to acquire pathogenic IPIs (p=0.03). However, none of risk factors were identified to be associated with pathogenic IPIs.

Prevalence of intestinal parasitic infections and associated risk factors among students at Dona Berber primary school, Bahir Dar, Ethiopia

BACKGROUND

Intestinal parasitic infections are still one of the major health concerns in developing countries. Monitoring of intestinal parasitic infection and associated risk factors are essential for intervention strategies. Therefore, the aim of this study was to assess the prevalence of intestinal parasitic infection and associated risk factors among students at Dona Berber primary school, Bahir Dar, Ethiopia.

METHODS

School based cross-sectional study was conducted among students at Dona Berber primary school from October 2015 to June 2016. Three hundred fifty nine students were involved in the study by providing stool specimens and detailed personal information. Students were selected by stratified and systematic random sampling method. Fresh stool samples were collected from each student and processed by formal-ether fecal concentration technique. Data were analyzed using SPSS version 20.0 statistical software and p value <0.05 were used as statistically significant.

RESULTS

Among the 359 students participated in the study, 235 (65.5%) were infected by one or more intestinal parasites. The rates of single and double parasitic infections among students were 49.6% and 16.2%, respectively. The most prevalent parasite detected in the study was E. histolytica/dispar (24.5%) followed by hookworm (22.8%). Among the different variables assessed in the study, family size of 6 (AOR = 4.90; 95% CI, 2.03-11.83), irregularly shoe wearing habit (AOR = 2.85; 95% CI, 1.53-5.32) and unclean finger nail (AOR = 3.68; 95% CI, 1.87-7.26) were independently predict intestinal parasitic infections. Student drinking well water (AOR = 2.51; 95% CI, 2.30-4.86) and unclean finger nail (AOR = 4.42; 95% CI, 2.55-7.65) were strongly associated with E. histolytica/dispar infection. Likewise, irregular shoe wearing habit (AOR = 14.13; 95% CI, 7.06-28.29) was strongly associated with hookworm infections.

CONCLUSION

High prevalence of intestinal parasitic infection among the study participants demands improvement of health education, environmental sanitation and quality of water sources.

Prevalence of intestinal parasitic infection among primary school children in southern Iran

A cross-sectional study was carried out to determine the prevalence of intestinal parasites in primary school children in Bandar Abbas, southern Iran during January to March 2016. Single stool samples were collected from 1465 participants by clean stool cup. The questionnaire was prepared on the basis of demographic characteristics. The diagnosis was made on the basis of the direct wet mount, formalin-ether concentration, and Ziehl-Neelsen and trichrome stained slides. Out of the 1465 school children examined, six species of intestinal parasites were identified with an overall prevalence of 95 positive students (6.5%). Prevalence of protozoan infections (6.2%) was significantly higher than helminth infections (0.3%). The most common protozoan species were Giardia lamblia (n = 42, 2.9%) and Blastocystis hominis (n = 31, 2.1%). Only two cases of Hymenolepis nana and two cases of Enterobius vermicularis were detected. The prevalence of parasitic infections was higher in boys (n = 52, 7%) than girls (n = 41, 5.7%), but the difference was not significant. The parasitic infections were higher among the children whose parent's education was less than high school diploma (p = 0.000), and there was also a significant association between the parents' jobs and the intensity of parasitic infection. The prevalence of intestinal parasites, compared to the previous studies in this area, was significantly lower; that is mainly due to an increase in the quality of life and parents' education as well as the accessibility to health services. The most prevalent intestinal parasite was G. lamblia; therefore, it is recommended that more emphasis is applied to controlling and preventing this parasitic infection by washing hands, particularly before each meal course.

Investigation of Factors Affecting Frequency of Intestinal Parasites in Primary School Students in an Urban Region in Turkey

AIM

The aim of the study was to determine the incidence of intestinal parasitic diseases (IPD) and associated factors in primary school students and to assess the knowledge and practices of mothers about these diseases.

METHODS

This is a cross-sectional study carried out in January-March 2014 in 471 students aged 5-11 years, studying at 3 schools randomly selected from the city centre regions with different socioeconomic levels. Stratified sampling method was used in the present study and the data were collected in two stages. In the first stage, parents were informed about the study and pre-prepared questionnaire forms were used to collect the data about the students and parents. In the second stage, laboratory analyses of collected stool samples were performed.

RESULTS

The total prevalence of IPD was 18.3%, it was higher in the primary school located in a region with a lower socioeconomic level compared to other two schools (27.6% vs. 14.4%, and 10%, respectively). Most commonly detected parasite was E. vermicularis (12.1%). The prevalence of IPD was not associated with the classroom, gender, number of siblings, and the use of purified drinking water at home, while it was found to decrease with the increasing maternal education level. The maternal knowledge level score was 12.01±4.29 vs. 13.41±3.94 in students with and without IPD, respectively. With regard to the methods used to treat IPD, 23% of the mothers reported that they are using conventional methods.

CONCLUSION

The health education programmes about the associated risk factors are of great importance for early detection and treatment of childhood parasitic infections.