scholarly journals Parasitological and serological studies on amoebiasis and other intestinal parasitic infections in the rural sector around Recife, Northeast Brazil

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.

1988 ◽  
Vol 30 (4) ◽  
pp. 313-321 ◽  
Author(s):  
Mitsu Okazaki ◽  
Masaichi Okazaki ◽  
Paulo Miranda ◽  
Joan Neto ◽  
Vilneide Diegues ◽  
...  

Parasitological examinations were carried out during April to August, 1987, with 187 out-patients of the IMIP hospital, located in the center of Recife City, and 464 inhabitants of several villages around Cabo City, 50 Km southeast of Recife, Pernambuco, Brazil. Approximately 71% of the IMIP patients and 92% of the Cabo inhabitants were infected with at least one species of intestinal parasite. There was minimum difference in the prevalence rate of Trichuris trichiura between two areas, whereas the prevalence rates of Ascaris lumbricoides, hookworms, Strongyloides stercoralis, Schistosoma mansoni and Entamoeba histolytica were higher in the inhabitants of the Cabo City area. Only Giardia lamblia was more prevalent in the out-patients of IMIP hospital. Test tube cultivation revealed that the prevalence rate of Necator americanus in both areas was much higher than that of Ancylostoma duodenale , and also that the prevalence rate of S. stercoralis of the IMIP patients and Cabo inhabitants were 4.5% and 9.6%, respectively. Six hundred and fifteen sera were serologically examined for amoebiasis by the gel diffusion precipitation test (GDP) and enzyme linked immunosorbent assay (ELISA) using the antigen prepared from axenically cultured trophozoite of E. histolytica (strain HM-ITMSS). No positive reaction was observed in all of the sera as examined by GDP, while 32 out of 615 sera were positive on ELISA.


Author(s):  
Arcelia González-García ◽  
Claudia Hernández-Salas ◽  
Rosa Maria Martínez-Ortiz ◽  
Lilia González-Martínez

Introduction: Nowadays in our state, intestinal parasitic diseases are still endemic, with a greater frequency in rural and mountainous urban areas. After the years have elapsed since the last national survey, it was necessary to carry out a new survey to know the prevalence rates of intestinal parasitosis and to compare the results obtained between both studies. Such knowledge would be of great value in developing health strategies and designing intestinal parasitic infection control programs. Objective: to determine the current prevalence rates of intestinal parasites, to compare the results with those of the survey obtained. Methods: a random cross-sectional descriptive study was carried out during the months of December 2018 to March 2019 in a random sample of both sexes from the population of urban communities and the province of Zacatecas, Zac. Each one had a stool sample collected that was analyzed by the direct examination method, the Willis concentration technique, and the Kato-Katz examination; A questionnaire was also applied to them. Results: when comparing the results of the national and state surveys of intestinal parasitic infections carried out in 2009 and 2018, it was found that, in general, infections by parasites decreased, both helminths and pathogenic protozoa, although those infected with commensals increased their frequency in that of 2019. There was also a decrease in the frequency of infections by all species of soil-transmitted helminths, Trichuris trichiura, Ascaris lumbricoides, ancylostomideos, and Strongyloides stercoralis, as well as by the pathogenic protozoa Giardia lamblia and Entamoeba histolitica. Conclusions: when comparing the results of national and state surveys of intestinal parasite infections carried out in 2018 and 2019, it was found that in general the frequencies of infections with intestinal parasites decreased. The finding in both studies of a higher frequency of infection with parasites or commensals in the group aged 5 to 14 years (school age), supports the recommendation to place emphasis on control programs for intestinal parasites in this age group.


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.


2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
A. E. Abah ◽  
F. O. I. Arene

Status of intestinal parasitic infections among primary school children in Rivers State, Nigeria, was investigated between January and December 2011. A total of 3,826 stool samples were collected from school children (1,828 males and 1998 females) in 36 primary schools from 13 local government areas of Rivers State. The samples were analyzed using wet saline/iodine and formol ether concentration methods. Of the 3,826 stool samples examined, 1059 (27.66%) were positive for different intestinal parasites, namely,Ascaris lumbricoides(51.78%), hookworm sp. (25.0%),Trichuris trichiura(15.18%),Strongyloides stercoralis(7.14%),Taeniasp. (0.89%), andEnterobius vermicularis(0.01%). The prevalence of the infection was generally higher in males (57.60%) than females (42.40%). The differences were not statistically significant (P>0.05). Among these intestinal parasites,Ascaris lumbricoides, hookworm sp., andTrichuris trichiurawere found in all the 13 local government areas studied whileStrongyloides stercoraliswas found in 12,Taeniasp. in five, andEnterobius vermicularisin only one community in Ahoada Local Government Area. The overall infection rate remains high and would require coordinated deworming of the school children within the state.


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.


Author(s):  
Shahrzad Soltani ◽  
Shokrollah Salmanzadeh ◽  
Sheyda Soltani ◽  
Mehdi Sagha Kahvaz ◽  
Sara Mobarak ◽  
...  

Background: The current study was aimed to assess the prevalence of intestinal parasitic infections (IPIs) in persons who were referred to selected hospitals of Abadan and Khorramshahr cities, in southwest of Iran. Materials and Methods: In this descriptive cross-sectional study, 43200 and 28821 stool specimens were gathered from Abadan and Khorramshahr cities, respectively, during four consecutive years (2014-2017). Results: A decreasing trend was seen in the prevalence rate of IPIs in Abadan and Khorramshahr cities. The overall prevalence of IPIs were estimated 5.82% and 6.11% in Abadan and Khorramshahr cities, respectively. In Abadan city, the proportion of IPIs in male persons with 56% was higher than females 44%, while in Khorramshahr city, the more prevalence was observed in females (54% vs. 46%). Moreover, according to the season, the highest prevalence were recorded in the Spiring (30.4%) and Summer (31.1%) in Abadan and Khorramshahr cities, respectively. We found Giardia lamblia, as the most frequent parasite in studied individuals of both cities (Abadan: 2.92%; 1261/43200 and Khorramshahr: 3.15%; 908/28821). Other parasites were as follows: Entamoeba histolytica/dispar, E. coli, E. hartmanni, Blastocystis hominis, Hymenolepis nana, Enterobius vermicularis, Strongyloides stercoralis, and Taenia spp. Conclusion: This was the first study on the prevalence of IPIs in Abadan and Khorramshahr cities, southwest of Iran. Intestinal parasites are still the main public health concern in these regions. Health education, improving sanitary conditions, screening and treatment of infected people, particularly in rural and semi-urban areas can be helpful.


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.


2017 ◽  
Vol 2017 ◽  
pp. 1-5
Author(s):  
Khadim Diongue ◽  
Mouhamadou Ndiaye ◽  
Mame Cheikh Seck ◽  
Mamadou Alpha Diallo ◽  
Yaye Dié Ndiaye ◽  
...  

To identify the parasites responsible for intestinal parasitic infections diagnosed at Le Dantec University Hospital of Dakar, distribution of parasites detected in stool samples of patients was studied. From 2011 to 2015, 2578 patients were included in the study. A direct examination and Ritchie technique were performed as parasite search techniques. In total, 408 samples were positive showing 440 intestinal parasites; this corresponds to prevalence of 15.8%. Parasites were detected in monoparasitism (85.7%) and multiparasitism (14.3%). The most common species found in monoparasitism wereEntamoeba coli(38.9%),E. histolytica/dispar(12.7%),Giardia intestinalis(8%), andAscaris lumbricoides(7.3%). The most common associations wereA. lumbricoides-Trichuris trichiura(3.6%) andE. coli-G. intestinalis(2.7%). Nonhospitalized patients were significantly more affected with 65.4% compared to hospitalized counterparts; and also there were more men (50.7%) than women. With 67.4%, adults were the most affected age group, while the elderly were less affected with only 7% (p=0.5). This study shows increasing prevalence of intestinal parasitic infections over the years. So health education should be promoted in addition to the already begun mass treatment program. This would help to limit or even halt the spread of these diseases.


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.


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.


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