scholarly journals Utility of Multiple-Stool-Specimen Ova and Parasite Examinations in a High-Prevalence Setting

1999 ◽  
Vol 37 (8) ◽  
pp. 2408-2411 ◽  
Author(s):  
Charles P. Cartwright

A retrospective analysis of the results of 2,704 ova and parasite (O & P) examinations performed on stool specimens collected from 1,374 patients between October 1996 and September 1997 was performed to evaluate the utility of performing O & P examinations on multiple, independently collected stool specimens in a high-prevalence setting. A total of 995 specimens (36.8%) examined during the study contained parasites; 546 (20.2%) contained pathogenic organisms. The positivity rate (54.5%) for the patients from whom three specimens were examined was significantly higher than for the patients from whom either two specimens (33.3%) or a single specimen (19.8%) was submitted for examination. For the group of patients from whom at least 3 specimens were submitted for O & P examination, 373 independent opportunities for diagnosing infection with intestinal parasites could be analyzed. The first stool specimen collected proved to be adequate in only 75.9% (283 of 373) of evaluated cases; however, examination of two specimens increased the sensitivity of O & P detection to 92% (343 of 373). The third specimen collected provided additional information on only 30 of 373 occasions (8%). These data indicate that in populations with a high prevalence of intestinal parasitic infections, two independently collected stool specimens should be subjected to O & P examination to ensure adequate diagnostic sensitivity.

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Gebeyehu Yihenew ◽  
Haileeyesus Adamu ◽  
Beyene Petros

Introduction.Parasitic diseases are the major causes of human health problem in Ethiopia. The high prevalence of parasitic infections is closely correlated with poverty, poor environmental hygiene, and impoverished health services.Objective.The study was conducted to assess the impact of health-conscious Awramba cooperative community and its neighboring communities on the prevalence of parasitic infections in South Gondar, Ethiopia.Methods.Single stool specimens were collected from 392 individuals from Awramba and the neighboring communities. Specimens were examined microscopically for the presence of parasites using microscopy. Questionnaire was administered to determine the knowledge attitude and practice (KAP) of study participants.Results.Of the total 392 study participants examined, 58(14.8%) were positive for malaria and 173 (44.1%) for intestinal parasites. The prevalence of malaria in Awramba community (5.1%) was less than that in neighboring communities (24.5%). The prevalence of parasitic infections in Awramba (18.8%) was less than that of the neighboring communities (69.4%).Conclusion.This study showed that good household and environmental hygiene, good toilet construction and usage, and proper utilization of ITN in Awramba cooperative community have significantly contributed to the reduction of the burden of parasitic infections. Thus, the positive achievement in reducing parasitic infections in Awramba cooperative community could be used as a model for affordable health intervention in the neighboring communities, in particular, and the whole country in general.


1990 ◽  
Vol 32 (6) ◽  
pp. 428-435 ◽  
Author(s):  
José Felipe Gonçalves ◽  
Masanobu Tanabe ◽  
Francisco de Paula de Melo Medeiros ◽  
Fernando José Gonçalves ◽  
Ivanize da Silva Aca ◽  
...  

Parasitological examinations were carried out during July to December, 1989, on 485 inhabitants of four villages in São Lourenço da Mata, 25 km northwest of Recife, Pernambuco, Brazil. Approximately 99.6% of the inhabitants were infected with at least one species of intestinal parasites. A high prevalence of Schistosoma mansoni (82.1%), hookworm (80.2%) Trichuris trichiura (69.9%), Ascaris lumbricoides (61.9%) and Entamoeba coli (36.7%) infections were demonstrated. Test tube cultivation revealed that the most common species of hookworm in this region was Necator americanus (88.4%), and also that the prevalence of Strongyloides stercoralis was 5.8%. Three hundred and thirty-four sera were serologically examined for amoebiasis by the gel diffusion precipitation test (GDP) and enzyme-linked immunosorbent assay (ELISA). No positive reaction was observed in all sera as examined by GDP, while 24 sera were positive by ELISA.


2020 ◽  
Vol 66 (1) ◽  
Author(s):  
Katarzyna Gągała ◽  
Lidia Kołodziejczyk ◽  
Danuta Kosik-Bogacka ◽  
Małgorzata Pilecka-Rapacz

Introduction: Intestinal parasitoses are among the most common parasitic diseases in Poland.The aim of this study was to assess their prevalence in patients of the Laboratory of the Department of Biology and Medical Parasitology (LDBMP) of the Pomeranian Medical University in Szczecin (PMU) in the years 1983–2012.Materials and methods: The analysis concerned the results of parasitological surveys conducted between 1983–2012 in 9760 patients. Parasitological diagnosis was performed by standard faecal examination method (direct swab) and/or perianal swab.Results: During the study period, 486 cases of infection with intestinal parasites were recorded. The mean prevalence of intestinal parasites was 4.98%, and the percentage of infected patients ranged from 8.8% in 1993 to 0% in 2002. The most frequently detected parasitic species were: Entamoeba coli (1.52%), Giardia lamblia (0.95%), Blastocystis spp. (0.89%), Enterobius vermicularis (0.79%), and Taenia saginata (0.36%). In the period 2003–2012 the most prevalent parasites were Blastocystis spp., E. coli, and E. vermicularis. An increase in the prevalence of intestinal parasitic infections from 2009–2012 was associated with an increase in the prevalence of Blastocystis spp.Conclusions: The prevalence of intestinal parasites among the patients of the LDBMP in the years 1983–2012 was lower in comparison with other Polish regions. The high prevalence of 2 protozoan species – potentially pathogenic Blastocystis spp. and non-pathogenic E. coli – among intestinal parasites detected in the years 2003–2012 may indicate improvement in the epidemiological situation regarding intestinal parasitoses in patients of the LDBMP in comparison to the 1980s and 1990s.


Author(s):  
N. C. Eze ◽  
A. E. Abah ◽  
D. O. Ezeoru

This study was carried out to determine the prevalence of intestinal parasitic infections  among patients of psychiatric hospital Rumuigbo, Rivers State, Nigeria between June to September, 2017. Stool specimen were collected and analyzed from 203 patients for ova, larvae or cysts of intestinal parasites using direct wet mount and formol-ether concentration techniques. Of these, 78 (38.4%) were infected. Five parasitic infections were identified of which Ascaris lumbricoides had the highest prevalence (39.7%). Others included hookworm (8.4%), T.trichuria (4.4%) and 2 protozoans: Entamoeba histolytica (7.4%) and G. lamblia (3.0%). The occurrence of these parasites varied significantly (p< 0.05). Patients suffering from Schizophrenia had the highest prevalence of infection 33 (78.6%) followed by patients with Substance Abuse Disorder 11(37.9%), while the least prevalence was found among patients suffering from Anxiety disorder. Parasitic infection was most frequent among patients aged 18-27 years and higher among males 45 (47.9%) than the females 33 (30.3%).Prevalence of these parasitic infections varied significantly among sexes and age groups. This study has documented a higher prevalence of intestinal parasite amongst the mentally challenged in our society, re-emphasizing the need for intermittent de-worming among all the patients.


2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Solomon Yeshanew ◽  
Melaku Tadege ◽  
Abdulhakim Abamecha

Food handlers are important sources of intestinal parasitic infection to the public and mass catering service areas. Several reports worldwide particularly in developing countries showed a high prevalence of intestinal parasitic infections among these groups of individuals. In an attempt to determine the prevalence of intestinal parasites, a cross-sectional study was carried out among food handlers in food establishment areas of Mettu town, Southwest Ethiopia. To collect sociodemographic characteristics of the study participants, a structured questionnaire and physical observation were employed. Stool specimens collected from each food handlers participated in the study were then examined using light microscopy of the wet mount followed by formol-ether concentration methods to see infection status. A total of 139 food handlers were enrolled in the study. Majority of them were females 89 (64%), and 124 (89.2%) of them had not taken any training related to food handling and preparation. Sixty-two (44.6%) of the study participants were diagnosed with one or more intestinal parasites. The chi-square test showed that intestinal parasite infection was found associated with personal hygiene ( p  ≤ 0.0001), nail trimming status ( p  ≤ 0.0001), and hair cover status ( p  ≤ 0.040). The multivariable logistic regression indicated that the risk to be infected with intestinal parasites were related with older age ( p  ≤ 0.032), food handlers who had no hand wash practices ( p  ≤ 0.033), who had no food handling and preparation training ( p  ≤ 0.005), poor personal hygiene ( p  ≤ 0.0001), who had not taken regular medical checkup ( p  ≤ 0.008), and whose nail was not trimmed ( p  ≤ 0.0001). The most abundant intestinal parasite identified was G. lamblia (24, 26.7%) followed by E. histolytica/dispar (22, 24.4%), and A. lumbricoides (15, 16.7%). Twenty-eight (45.2%) study individuals were also found with mixed infections. The study thus revealed a high prevalence of intestinal parasitic infection among apparently healthy food handlers in food establishments of the study area. Mass drug administration for all food handlers working in food establishment areas of the town coupled with health education and training should be initiated urgently.


2021 ◽  
Vol 9 (02) ◽  
pp. 30-35
Author(s):  
Shristi Raut ◽  
Srijan Bhattarai ◽  
Rita Khanal ◽  
Sulochana Khatiwada ◽  
Rajeshwar Reddy Kasarla

INTRODUCTION: Intestinal parasites cause significant morbidity and mortality, particularly in the tropics including Nepal. The main objective of this study was to explore the burden of intestinal parasitic infections among children in 5 different primary schools in Bhairahawa, Nepal. MATERIAL AND METHODS: This was a cross-sectional comparative study among 408 children from 5 schools in Bhirahawa, Nepal. Stool specimens collected in a plastic container were transported to microbiology laboratory in Universal College of Medical Sciences Teaching Hospital (UCMSTH) immediately. Each sample was examined macroscopically and microscopically for the evidence of parasitic infection. All samples were re-analysed by sedimentation and floatation concentration techniques one after another. RESULTS: The overall prevalence of the parasitic infection was 46.5%. The prevalence varied by the methods that included routine microscopy (23.2%), sedimentation (41.6%) and flotation (8.3%). Ascaris lumbricoides was the most common (29.1%) parasite followed by Entamoeba histolytica (6.1%). Mixed infection was also seen in 7.8% of the samples. Factors such as children’s academic year, age, religion, existing illness, household water sources, meat consumed, domestic animals at house, and recent history of taking anti-helminthics were significantly associated with the intestinal parasitic infections. Prevalence of intestinal parasitic infection was higher in public school (61.1%) compared to private school (37%). Male students had slightly more infections (47.3%) than females (45.7%). CONCLUSIONS: Enteric parasitic infection was very high among the primary schools’ students in Bhairahawa, Nepal. Integrating concentration techniques in routine test can help to detect most of the enteric parasites in stool specimens.


2007 ◽  
Vol 37 (3) ◽  
pp. 163-165 ◽  
Author(s):  
T G A N Chandrasena ◽  
H C Hapuarachchi ◽  
M Y D Dayanath ◽  
A Pathmeswaran ◽  
N R de Silva

The growth status and intestinal parasitic infections among a group of children displaced by war in Sri Lanka was investigated. There was a high prevalence of growth retardation (wasting, stunting and underweight being 41%, 28% and 69.9%, respectively) and intestinal parasitic infections (40.2%) among the study population. Provision of adequate food, purified drinking water, sanitation and broad-spectrum anthelmintics is recommended.


2019 ◽  
Vol 19 (3) ◽  
pp. 284-287
Author(s):  
S. Viesy ◽  
J. Abdi ◽  
Z. Rezaei

Background: Intestinal parasitic infections are the one of the most common health problems in developing countries. Objective: A number of patients die annually due to complications caused by these parasites.Therefore, the aim of this study was to investigate the rate and type of parasitic infections, determine the factors affecting them in Ilam city and also provide strategies to prevent them.In this descriptive cross-sectional study conducted in one of the Ilam labs in 2016, 417 stool specimens were randomly collected. All specimens were examined using direct and ethanol formaldehyde.Suspect specimens were examined using Trichrom staining. Demographic information was also recorded in a questionnaire, and finally the results were analyzed using statistical software SPSS 20.The data were then compared with Chi-square test. Results: Out of the 417 patients examined, 59 (14.1%) were infected with intestinal parasites. The type of parasitic infection in 9.4% was Blastocystis hominis, 3.6% Entamoeba coli, 0.5% Entamoeba histolytica, 0.5% Giardia and 0.2% Trichomonas hominis. Conclusion: Despite the improvement of public health, parasitic infections are still considered as one of the health problems in the city of Ilam. Therefore, proper planning, public health education, raising the level of health in the area and the provision of safe drinking water are some of the ways to reduce parasitic infections in the region.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Corinne Légeret ◽  
Céline Rüttimann ◽  
Hans Fankhauser ◽  
Henrik Köhler

Abstract Background A wide variation of causes can lead to gastrointestinal symptoms in children- an infection with parasites is one of them. The expansion of international travel might lead to an increase in testing children for a correspondent infection. Currently there are no guidelines available, which patients should be tested for a possible parasitical infection. The aim of the study was to characterize Swiss children suffering from intestinal parasites, in order to provide more knowledge for the clinician who should be tested. Methods This is a retrospective study of Swiss pediatric patients, whose stools have been tested for parasites and helminths. Results A total of 1855 stool samples, belonging to 572 different children with an average age of 7.9 years, were tested within a 10-year period. The prevalence of a positive result was 4.2%, of which all were positive for Blastocystis, and 12.5% had a co-infection with Endolimax nana. Conclusion Immigrants, immune compromised children with diarrhea and pediatric patients with bloody or protracted diarrhea should have 2 different stool specimens examined for a possible parasitical infection.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Zelalem Animaw ◽  
Addisu Melese ◽  
Habtamu Demelash ◽  
Girma Seyoum ◽  
Abiy Abebe

Abstract Background Intestinal parasitic infections (IPIs) are public health problems widely distributed in the world and cause significant morbidity and mortality; many of which occur among women of reproductive age. IPIs caused by helminthes and protozoan parasites are common among pregnant women. Data on the national pooled prevalence of intestinal parasites and associated factors during pregnancy is not documented well in Ethiopia. This review aims at summarizing evidences on the burden of IPIs and associated factors among pregnant women in Ethiopia. Methods Published and unpublished studies were thoroughly searched at MEDLINE/PubMed, EMBASE, Google Scholar, CINAHL, Cochrane library and Science Direct. In addition, repositories of Addis Ababa, Gondar and Jimma Universities were searched. Eligible studies were selected following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guideline. The pooled prevalence of intestinal parasites and summary odds ratios (ORs) were determined with 95 % confidence intervals (CI). Sub-groups analyses were done based on study region, types of parasites, methods of stool examination and study setting. The statistical analyses were performed using STATA version 14.0 software. Results Among 168 retrieved studies, 31 studies with a total population of 12,118 pregnant women were included. The estimated pooled prevalence of IPIs among pregnant women in Ethiopia was 27.32 % (95 % CI: 20.61, 33.87 %). In the subgroup analysis, Oromia and Amhara regions had the highest prevalence with a 29.78 % (95 % CI: 15.97, 43.60) and 29.63 % (95 % CI: 15.37, 43.89); respectively. In addition, studies conducted in the community showed higher prevalence than institution based studies (49.93 % Vs 24.84 %; respectively). The most prevalent type of intestinal parasite identified were Hookworm followed by Ascaris lumbricoides with a pooled prevalence of 11.2 and 10.34 %, respectively. In our analysis; residence, being bare footed, lack of hand washing habit and eating uncooked/raw vegetables were significantly associated with IPIs among pregnant women in Ethiopia. Conclusions Prevalence of IPIs during pregnancy is relatively high in Ethiopia. Poor hygienic practices were identified as risk factors. Based on our finding, targeted preventive measures shall be considered so as to prevent morbidity and mortality due to IPIs.


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