scholarly journals Prevalence of Selected Intestinal Protozoan Infections in Marginalized Rural Communities in Palestine

2019 ◽  
Author(s):  
Amer Al-Jawabreh ◽  
Suheir Ereqat ◽  
Kamal Dumaidi ◽  
Hanan Al-Jawabreh ◽  
Ziad Abdeen ◽  
...  

Abstract Background Intestinal parasitic infections are common in rural areas with poor infrastructure and low socioeconomic status. The aim of this study was to estimate the prevalence of selected parasitic infections in marginalized rural areas in the Palestinian West Bank Region, using conventional and PCR-based methods, and also to assess risk predictors of infection.Methods A cross-sectional study was conducted on 104 individuals from three rural villages in the Jordan Valley. Stool samples were collected and examined by a battery of tests that included microscopy of wet fecal samples in normal saline with iodine, concentration by ethyl acetate sedimentation and also by zinc sulfate floatation, a conventional PCR and a real-time PCR (qPCR). Risk factors were assessed that included demographic, socioeconomic, and behavioral characteristics. Data on method performance was analyzed by kappa-statistic, Cochrane’s Q, and McNemar post hoc test. Mid-P exact test and odds ratio were used to discern association between outcome and risk predictors.Results The overall prevalence of intestinal parasitic infections was 48% (49/102). The predominant parasites were Giardia lamblia at 37% (37/102) and Hymenolepis nana at 9% (9/102). To concentrate cysts and eggs, sedimentation can be used as an alternative to floatation with a loss of 1% of positive cases. The methods employing PCRs proved crucial as it increased the detected infection rate of G. lamblia approximately three-fold from 13% by the conventional methods to 37% by the qPCR. Multiple infections were present in 13% (13/102) of the study group, which included double (10%) and triple (3%) infections. Regarding the genus Entamoeba , E. dispar and E. coli were detected at rates of 2% and 8%, respectively. While none of the individuals were infected with the pathogenic E. histolytica , E. nana (4%) was detected for the first time in the area. Age was a risk predictor for infection (OR=2.61, CI 95% 1.05-6.45, P= 0.038).Conclusions The increased prevalence of intestinal parasitic infections in children in marginalized rural areas in Palestine is worrying. The addition of PCR-based methods is important for the diagnosis of such infections as, with cautious interpretation, it increases proficiency and overcomes underestimation and misdiagnosis of cases.

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Amer Al-Jawabreh ◽  
Suheir Ereqat ◽  
Kamal Dumaidi ◽  
Hanan Al-Jawabreh ◽  
Ziad Abdeen ◽  
...  

Abstract Background Intestinal parasitic infections are common in rural areas with poor infrastructure and low socioeconomic status. The aim of this study was to estimate the prevalence of selected parasitic infections in marginalized rural areas in the northern part of the Palestinian West Bank Region, using conventional and PCR-based methods, and also to assess risk predictors of infection. Methods A cross-sectional study was conducted on 104 individuals from three rural villages in the Jordan Valley. Stool samples were collected and examined by a battery of tests that included microscopy of wet fecal samples in normal saline with iodine, concentration by ethyl acetate sedimentation and also by zinc sulfate floatation, a conventional PCR and a real-time PCR (qPCR). Risk factors were assessed that included demographic, socioeconomic, and behavioral characteristics. Data on method performance was analyzed by kappa-statistic, Cochrane’s Q, and McNemar post hoc test. Mid-P exact test and odds ratio were used to discern association between outcome and risk predictors. Results The overall prevalence of intestinal parasitic infections was 48% (49/102). The predominant parasites were Giardia lamblia at 37% (37/102) and Hymenolepis nana at 9% (9/102). To concentrate cysts and eggs, sedimentation can be used as an alternative to floatation with a loss of 1% of positive cases. The methods employing PCRs proved crucial as it increased the detected infection rate of G. lamblia approximately three-fold from 13% by the conventional methods to 37% by the qPCR. Multiple infections were present in 13% (13/102) of the study group, which included double (10%) and triple (3%) infections. Regarding the genus Entamoeba, E. dispar and E. coli were detected at rates of 2 and 8%, respectively. While none of the individuals were infected with the pathogenic E. histolytica, E. nana (4%) was detected for the first time in the area. Age was a risk predictor for infection (OR = 2.61, CI 95% 1.05–6.45, P = 0.038). Conclusions The increased prevalence of intestinal parasitic infections in children in marginalized rural areas in Palestine is worrying. The addition of PCR-based methods is important for the diagnosis of such infections as, with cautious interpretation, it increases proficiency and overcomes underestimation and misdiagnosis of cases. Control measures including education on personal hygiene and environmental sanitation, should be introduced to reduce the prevalence of the intestinal parasites and, thus, the infections they cause in this and other areas.


2021 ◽  
Author(s):  
Viviane Ongbassomben ◽  
Cyrille Ndo ◽  
Ericka A. Lebon ◽  
Hugues C. Nana Djeunga ◽  
Albert L. Same Ekobo ◽  
...  

AbstractBackgroundIntestinal parasitic infections remain of public health concern worldwide, especially among rural and poorest populations as a consequence of precariousness, lack of sanitation, non-availability of potable water and poor hygiene conditions. The present study aimed to better understand the epidemiology of intestinal parasitic infections in rural areas of forested Cameroon.MethodologyA cross-sectional survey was conducted in three Health Areas (Ndelele, Kentzou and Lolo) of the Ndelele Health District (East Region, Cameroon). Information on socio-demographic characteristics, knowledge, attitudes, and practices regarding intestinal parasitic infections were collected using a semi-structured questionnaire. Stool samples were collected and analyzed by the Kato-Katz and formalin-ether concentration techniques to complement simple direct examination.Principal FindingsA total of 406 individuals belonging to three main groups (Kako or Bantu, Baka or Pygmies and Central African Republic refugees) were enrolled in the study. The overall intestinal parasitic infection rate was 74.9%, including 57.2% cases of polyparasitism. Fourteen parasite species were identified, 89.1% being intestinal protozoa and 41.8% belonging to helminths. Infections with helminths were associated with Baka (P < 0.0001). Spring water consumption was associated with hookworm infection (OR = 3.87; P = 0.008). Garbage deposited near houses was positively associated with infection with Giardia lamblia (OR = 3.41; P = 0.003). Polyparasitism was positively linked to washing hand without soap before meal (OR= 11.64; p= 0.002).Conclusion/SignificanceIntestinal parasitic infections exhibited high rates in the Ndelele Health District, especially among indigenous and hard-to-reach populations (Pygmies). Hygiene measures appear as the main drivers sustaining transmission, and targeted strategies should be developed to efficiently fight against these debilitating diseases.Author summaryIntestinal parasitic infections such as soil transmitted helminthiasis and schistosomiasis, remain a public health concern in Cameroon. To better understand the epidemiology of these infections in hard-to-reach populations in rural areas, a cross-sectional study was carried out in three health areas of Ndelele health District in the Eastern-Cameroon. The rate of intestinal parasitic infections was high (74.9%) especially in indigenous populations (Baka-Pygmies) which exhibited high prevalence of soil transmitted helminth infections (83.3%). The study confirmed that the lack of sanitation and poor hygiene largely contribute to the endemicity of intestinal parasitic infections, particularly among indigenous populations. Targeted control strategies seem mandatory to reach these populations and offer them appropriate care to interrupt or reduce the transmission of these diseases.


2019 ◽  
Author(s):  
Mohammad Javad Abbaszadeh Afshar ◽  
Maryam Barkhori Mehni ◽  
Mostafa Rezaeian ◽  
Mehdi Mohebali ◽  
Vali Baigi ◽  
...  

Abstract Background Determination of the prevalence and distribution pattern of intestinal parasites is a fundamental step to set up an effective control program to improve the health status. This study aimed to determine the prevalence of intestinal parasitic infections and associated risk factors among inhabitants of Rudbar-e Jonub county, southeast of Kerman province, southeastern Iran.Methods In this cross-sectional study, 861 stool specimens were collected from inhabitants of Rudbar-e Jonub county through a multistage cluster sampling method in 2018. The collected specimens were examined by parasitological methods including, direct wet-mounting (for the fresh specimens with a watery consistency), formalin-ethyl acetate sedimentation and agar plate culture.Results The prevalence of intestinal parasites was 34.2% (95% CI 30.1 to 38.2). The prevalence of protozoan parasites 32.3% (95% CI 28.4 to 36.5) was significantly higher than helminthic parasites 3.2% (95% CI 2.1 to 4.7). Blastocystis sp. , Entamoeba coli and Giardia lamblia as protozoan parasite and Hymenolepis nana as helminthic parasite were the most common detected intestinal parasites in the study. Entamoeba histolytica/dispar , Iodamoeba bütschlii , Chilomastix mesnili , Entamoeba hartmanni , Ascaris lambercoides , and Enterobius vermicularis were other detected parasites. Multiple logistic regression revealed a significant association of intestinal parasitic infections with source of drinking water and residency status (rural/urban). Multiple infections with 2 or 3 parasitic agents constituted 22.7% of 295 infected cases.Conclusions This study revealed a high prevalence of intestinal protozoan infections among inhabitants of Rudbar-e Jonub county. Intestinal parasites especially protozoans remain a challenging public health problem wherever sanitation and health measures are limited in Iran.


2020 ◽  
Author(s):  
Yafet Kesete ◽  
Huruy Tesfahiwet ◽  
Ghimja Fessehaye ◽  
Yohana Kidane ◽  
Yafet Tekle ◽  
...  

AbstractBackgroundIntestinal parasitic infections, anemia, and malnutrition are very endemic in resource-limited regions. School-aged children are at greater risk for the disease than any other age group as they are more susceptible to parasitosis, associated undergrowth and anemia. This study is aimed at evaluating the risk factors of intestinal parasitosis, malnutrition and anemia amongst elementary and junior school students in Ghindae area, Eritrea.MethodsA cross sectional study was conducted in 6 schools around Ghindae from February to April 2018. 450 children were randomly selected for analysis and consent was taken from guardians. The pertinent sociodemographic data was collected and anthropometric measurements were carried out to determine the proportion of students with malnutrition, stunting and thinness. Fecal samples were examined by formal concentration technique and blood specimen was collected for the assessment of hemoglobin using hemocue analyzer.ResultsThe overall prevalence of intestinal parasitosis was 45.3%. Protozoa infections (38.2%) were more prevalent than soil-transmitted helminthes infections (10.4%). The presence of different intestinal parasitic infections has statistically significant association with the residence area, washing habits, source of water, types of schools and type of latrine used with (p < 0.05). The prevalence of malnutrition was 37.1% with 18.5% stunting and 21.2% thinness. Malnutrition was in higher prevalence in semi-urban areas outside Ghindae. Students from Embatkala and Dongolo had 4.77 and 2.86 times higher odds of having low BMI for age than their counterpart respectively. The current prevalence of anemia was 12.4%, out of which, 7.6 % had mild while 4.4% of them had moderate anemia and 0.4% were severely anemic.ConclusionThe prevalence of intestinal parasitic infections, especially, protozoan infection was very high in the school children. Stunting was increased rate in rural areas around Ghindae. The prevalence of anemia was regarded as mild health burden. The high prevalence of parasitic infections in these children indicates that the protozoa and helminthes concerned are very common in the environment of these area and results of the risk factors analysis suggest that the transmission is from several routes. Access to clean water and latrines, with some hygiene and sanitation communication activities, in addition to introduction of micronutrient programs could improve health of children in that area.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Soumia Sebaa ◽  
Jerzy M. Behnke ◽  
Djamel Baroudi ◽  
Ahcene Hakem ◽  
Marawan A. Abu-Madi

Abstract Background Intestinal parasitic infections are amongst the most common infections worldwide and have been identified as one of the most significant causes of morbidity and mortality among disadvantaged populations. This comparative cross-sectional study was conducted to assess the prevalence of intestinal protozoan infections and to identify the significant risk factors associated with intestinal parasitic infections in Laghouat province, Southern Algeria. Methods A comparative cross-sectional study was conducted, involving 623 symptomatic and 1654 asymptomatic subjects. Structured questionnaires were used to identify environmental, socio demographic and behavioral factors. Stool specimens were collected and examined using direct wet mount, formalin-ether concentration, xenic in vitro culture and staining methods. Results A highly significant difference of prevalence was found between symptomatic (82.3%) and asymptomatic subjects (14.9%), with the majority attributable to protozoan infection. The most common species in the symptomatic subjects were Blastocystis spp. (43.8%), E. histolytica/dispar (25.4%) and Giardia intestinalis (14.6%) and more rarely Enterobius vermicularis (02.1%), Teania spp. (0.6%) and Trichuris trichiura (0.2%), while in asymptomatic population Blastocystis spp. (8%), Entamoeba coli (3.3%) and Entamoeba histolytica/dispar (2.5%) were the most common parasites detected with no case of helminth infection. Multivariate log-linear analysis showed that contact with animals was the main risk factor for transmission of these protozoa in both populations. Furthermore, living in rural areas was significantly associated with combined protozoan infection in the asymptomatic population, whereas, in the symptomatic population an increasing trend of protozoan infection was detected in the hot season. In addition, Blastocystis spp. and G. intestinalis infection were found to be associated with host sex and contact with animals across the study period. Conclusions Based on these results, several strategies are recommended in order to effectively reduce these infections including good animal husbandry practices, health education focused on good personal hygiene practices and adequate sanitation.


2007 ◽  
Vol 37 (4) ◽  
pp. 236-238 ◽  
Author(s):  
A A Escobedo ◽  
Roberto Cañete ◽  
F A Núñez

A cross-sectional study was carried out to determine the prevalence of intestinal parasitic infections and the intensity of soil-transmitted helminths (STHs) among children who attend the educational centres of San Juan y Martinez, Cuba. Ascaris lumbricoides, Blastocystis hominis and Giardia lamblia were the most common parasites found, with prevalence rates of 40.5%, 38.5% and 25%, respectively. In total, 91% of children harboured at least one type of intestinal parasite. The rates and intensity of intestinal parasitic infections found permit us to speculate that the conditions that predispose to acquire intestinal protozoan and STH infections persist in this municipality.


Author(s):  
Nwachukwu Chinedu Ugwunna ◽  
Nnamdi Nnanna Ude ◽  
Ogochukwu Chinwe Ugwunna ◽  
Chika Nwanma Onwasigwe ◽  
Emmanuel Nwabueze Aguwa ◽  
...  

Background: Globally, many people suffer from parasitic infections of the intestines with up to 24% of the world population are affected. These infections are particularly prevalent in low-and middle-income countries and exist mainly among economically and socially disadvantaged populations. This study sought to establish the current prevalence of STHs among preschool children in rural areas of Enugu State. Materials and Methods: This was a cross-sectional descriptive study carried out at Obinofia Ndi-Uno and Obe, rural communities of Enugu State, Nigeria. A pre-tested semi-structured interviewer-administered questionnaire and Laboratory kits for stool analysis were used. Data were analyzed using the IBM SPSS statistics version 22. Results: A total of 589 preschool children (294 from Obinofia Ndi-Uno and 295 from Obe) were studied. Ova of helminths were seen in the stool of 47 preschool children giving a prevalence of 8% with ascariasis being the predominant infection. Discussion: The prevalence of worm infection in this study was low compared to some studies in Nigeria, Africa, and other parts of the world.


2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Mohammad Javad Abbaszadeh Afshar ◽  
Maryam Barkhori Mehni ◽  
Mostafa Rezaeian ◽  
Mehdi Mohebali ◽  
Vali Baigi ◽  
...  

Abstract Background Determination of the prevalence and distribution pattern of intestinal parasites is a fundamental step to set up an effective control program to improve the health status. This study aimed to determine the prevalence of intestinal parasitic infections and associated risk factors among inhabitants of Rudbar-e Jonub county, southeast of Kerman province, southeastern Iran. Methods In this cross-sectional study, 861 stool specimens were collected from inhabitants of Rudbar-e Jonub county through a multistage cluster sampling method in 2018. The collected specimens were examined by parasitological methods including, direct wet-mounting (for the fresh specimens with a watery consistency), formalin-ethyl acetate sedimentation and agar plate culture. Results The prevalence of intestinal parasites was 34.2% (95% CI 30.1 to 38.2). The prevalence of protozoan parasites 32.3% (95% CI 28.4 to 36.5) was significantly higher than helminthic parasites 3.2% (95% CI 2.1 to 4.7). Blastocystis sp. (13.3%), Entamoeba coli (11.4%) and Giardia lamblia (10.6%) as protozoan parasite and Hymenolepis nana (2.4%) as helminthic parasite were the most common detected intestinal parasites in the study. Entamoeba histolytica/dispar (1.5%), Iodamoeba bütschlii (1.0%), Chilomastix mesnili (0.5%), Entamoeba hartmanni (0.4%), Enterobius vermicularis (0.3%) and Ascaris lambercoides (0.3%) were other detected parasites. Multiple logistic regression revealed a significant association of intestinal parasitic infections with source of drinking water and residency status (rural/urban). Multiple infections with 2 or 3 parasitic agents constituted 22.7% of 295 infected cases. Conclusions This study revealed a high prevalence of intestinal protozoan infections among inhabitants of Rudbar-e Jonub county. Intestinal parasites especially protozoans remain a challenging public health problem wherever sanitation and health measures are limited in Iran.


2003 ◽  
Vol 14 (3) ◽  
pp. 159-162 ◽  
Author(s):  
Ning Tang ◽  
Nian Ji Luo

BACKGROUND: Parasitic infections are widespread in rural areas of West China. The remote and humid environment, traditional ways of life, contaminated potable water and limited health services all contribute to the transmission and persistence of fecal parasites.OBJECTIVE: To describe the prevalence of intestinal parasitic infections in an area of West China, including its associations with demographic variables.METHODS: Single fecal specimens were collected using a previously validated kit. Parasites were detected microscopically by iodine-stained smear, modified Kato-Katz thick smear, simple saline smear, test tube filter paper culture and adhesive cellophane tape anal swab.RESULTS: The prevalence of enteric parasites in the population was 51.7%. The proportion of individuals infected with one parasite was 36.5%, two parasites 12.7%, three parasites 3.0% and four parasites 0.08%. Parasites identified includedAscaris lumbricoidesin 41.4% of all individuals tested,Ancylostoma duodenalein 17.7%,Trichurias trichuriain 8.25%,Enterobius vermicularisin 0.43%,Blastocystis hominisin 1.37%,Entamoeba coliin 0.47%,Entamoeba histolyticain 0.16%,Giardia lambliain 0.04%,Strongyloides stercoralisin 0.04% andClonorchis sinensisin 0.04%. The prevalence was significantly increased in women, people aged 15 to 19 years and over 80 years, the rural farm population, farmers, preschool and primary school groups, residents of a hilly rather than mountainous or plains terrain, and in intermediate income groups. The prevalence was significantly negatively associated with educational level, but not with age or income.CONCLUSIONS: This study supports the use of simple fecal examinations to monitor the parasite burden in rural areas of developing countries. Enteric parasites remain common in this population in rural China.


Author(s):  
Thomas Kuete ◽  
Hugues Ghislain Mbwang ◽  
Catherine Menengue Nguele ◽  
Albert Same Ekobo

Intestinal parasitic infections (IPIs) remain a public health issue in developing countries where overcrowded settlements and poor sanitation are general rule. Due to paucity of IPIs data in known overcrowded Cameroonian prisons, this cross-sectional study conducted in 2015 in the New-Bell Central Prison (NBCP) aimed to establish biodiversity, prevalence and risk factors of intestinal protozoan and helminthe infections among inmates. Fresh stool samples collected from the NBCP volunteered inmates were laboratory examined microscopically as fresh mounts plus iodine, Kato-Katz smears, formalin-ether concentration and modified Ziehl-Nelseen stained sediments. Of a total 374 inmates who participated in the study, overall IPIs prevalence was 39.3%. Helminthe and protozoa prevalence was 16.6% and 24.6% respectively. Parasites species were recorded at following prevalence: Ascaris lumbricoides (10.4%), Trichuris trichiura (5.1%), Schistosoma mansoni (0.5%), Entamoeba histolytica/dispar (14.2%), Entamoeba coli (16.6%), Giardia intestinalis (7.2%), Chilomastix mesnili (2.4%), Blastocystis spp (2.1%) and Cryptosporidium sp (4.3%). Co-infections by two or three parasites were recorded among parasitized inmates. Overall IPIs prevalence was not significantly influenced by gender, age, detention duration, education level, handwashing practices, sanitation and drinking water source. However, highest IPIs prevalence occurred in males aged 30 to 49 years old, less than one year detainees, latrine users and those who drank borehole water. Systematic handwashing practices and education level did not influence significantly IPIs prevalence. All helminthe infections were of light intensities. Inmates in the New Bell central prison were parasitized by several species of protozoa and intestinal worms in varying prevalence depending on the detention period, the sex, the age and hygiene. A regular IPIs control among prison inmates was recommended to the NBCP managers to prevent related morbidity.


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