Prevalence of Parasitic Intestinal Infections Among Food Handlers in Qazvin, İran (original) (raw)
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Iranian journal of public health, 2011
The main goal was to address the prevalence of enteric protozoan parasites in rural areas of Bandar-Abbas, southern Iran and to compare the results with the only conducted study in 1978. This descriptive study was performed from 2009 through 2010 on the 565 fecal samples. Formalin-ether concentration technique was performed and the analysis was carried out using Chi-square test in SPSS software version 13.5. Finally, the comparison of our results with the only previous study which was accomplished by Sheiban and Rezaeian in 1978 was done. The overall prevalence of the protozoan parasites was 48.8%. However, the prevalence of pathogen parasites was 23%. Previous research in 1978 showed 80.4% infectivity. The most protozoan parasites were Blastocystis hominis (25.53%), Giardia lamblia (17.2%) and Entamoeba coli (15.95%). Previous study in 1978 found Entamoeba coli as the most common protozoa. Our finding revealed that the rate of single infectivity was much higher compared to previous...
Prevalence of Intestinal Parasites in Food Handlers of Bandar Abbas, Southern Iran
Iranian Journal of Public Health, 2018
Background: Food handlers play a significant role in the dissemination and transmission of enteropathogenic microorganisms, including intestinal parasites. The aim of this study was to determine the prevalence of intestinal parasites in food handlers of Bandar Abbas, southern Iran. Methods: In this cross-sectional study, 800 stool samples were randomly collected in a period of 6 months from Jun to Nov 2015. The diagnosis was made on direct wet mount, formalin-ether concentration, Ziehl-Neelsen, and Trichrome stained slides. Results: 34.9% of participants were positive for stool parasites. The most infected individuals were seen in the workers of bakeries 54.3%, factories 41.1% fast foods 35.7%, supermarkets 34.7%, restaurants 33.9%, offices 29.8%, butchers 27.3% and coffee shops 26.7% respectively (P<0.05). The intestinal parasites were Blastocystis hominis 24.3%, Entamoeba coli 8%, Giardia lamblia 6.8% and Dientamoeba fragilis 4.3% respectively. Only two infections by Hymenolepi...
Novelty in Biomedicine, 2017
Background:intestinal parasitic infection is one of the most prevalent health problems in developing countries. This study was conducted to determine the prevalence of intestinal parasitic infection and its correlation with socio-demographic parameters in Haji-abad, 2015. M aterialsandMethods: This cross-sectional descriptive study was conducted on 635 samples. After completing questionnaires, stool samples were assessed macroscopically, and microscopically using direct slide smear with saline and lugol, formalin-ether concentration, Ziehl-Neelsen staining to track Cryptosporidium species and Trichrome staining for the samples suspected to amoeba and other indeterminate cases. PCR using specific primers was conducted for Entamoebahistolytica/E. dispar suspected samples. The results were analyzed using SPSS ver.16 software. R es ults: Of total 635 samples, 198 cases (31.2%) were infected by at least one intestinal parasite. The most common parasites in this area were: Blastocystis sp...
Pediatric practice and research, 2019
The aim of this study was to investigate the prevalence of Blastocystis spp. in pediatric patients who have gastrointestinal complaints. Materials and Methods: The parasitology data of pediatric patients who were sent to Selcuk University Medical Faculty Hospital Medical Microbiology Laboratory with the request of "stool parasite test" between October 2017-October 2019 in Konya were retrospectively analyzed. The stool samples investigated for parasites by direct microscopic examination (iodine saline) and stool concentration methods. Results: Parasitic positivity was found in 739 (6,48%) out of 11393 stool specimens of pediatric patients. Blastocystis spp. was found in 233 (31.5%) of the positive samples. Of the pediatric patients who were positive for Blastocystis spp., 109 (46.7%) were male, 124 (53.2%) were female and 94.4% were polyclinics and 5.6% were service patients. In 66 cases (28.3%) only Blastocystis spp., in 165 (70.8%) Blastocystis spp. and Entamoeba spp., in one of the samples Blastocystis spp. and Dientamoeba fragilis (0.4%) and in one Blastocystis spp., Entamoeba spp. and Dientamoeba fragilis (0.4%) together was determined. Conclusion: It was concluded that Blastocystis spp. and Entamoeba spp. were the most common parasitic agents and it was found that the patients infected with these parasites were mostly found in patients admitted to the Pediatric Emergency Department (48%). Blastocystis infections show different clinical picture in each patient. Some of the Blastocystis subtypes are thought to be pathogenic and some are non-pathogenic and therefore, new scientific studies are needed to determine the relationship between parasite and pathogenicity.
International Journal of Enteric Pathogens, 2015
Background: Intestinal parasites of humans are one of the most important health problems worldwide, especially those located in tropical and subtropical areas. Objectives: The aim of this study was to determine the frequency of intestinal parasites in patients with gastrointestinal disorders, in different parts of Iran. Patients and Methods: A total of 1520 stool samples were collected from patients with gastrointestinal disorders. The stool specimens were examined by direct wet mount, formalin-ether concentration and a modified version of the Ziehl-Neelsen staining technique. Amoeba-positive samples were cultured for further differentiation of Entamoeba histolytica, E. dispar, E. moshkovskii. DNA-based methods were used to differentiate these amoebas and to detect Cryptosporidium-positive samples. Statistical analysis was carried out by SPSS ver. 16. Results: Out of the 1520 individuals studied, 153 (10.06%) were infected at least with one intestinal parasite. 781 (51.4%) of patients were male and 738 (48.6%) were female. The prevalence of protozoan parasites 148 (9.7%) was significantly higher than helminth parasites 5 (0.3%) (P < 0.001). The frequency of intestinal parasites was as follows: Blastocystis sp., 72 (4.73%); Giardia intestinalis, 35 (2.30%); Entamoeba coli 21 (1.38%); Endolimax nana 10 (0.92%); Cryptosporidium spp., 1 (0.06%); Entamoeba dispar, 1 (0.06%); Dientamoeba fragilis, 1 (0.06%); Hymenolepis nana, 3 (0.19%); Dicrocoelium dendriticum, 2 (0.13%). In five (0.32%) of the positive samples, co-infections with two parasites were found. G. intestinalis was more prevalent in male 22/35 (62.86%) than female 13/35 (37.14%) as well as in 0-9 years old group. In one sample Heterodera ova contained larva were seen. Conclusions: Blastocystis and G. intestinalis were the predominant intestinal parasites detected in patient with gastrointestinal disorders. The results indicated that the intestinal parasites, particularly helminth infections have been significantly declined in recent years.
Prevalence of Intestinal Parasitic Infections in Jiroft, Kerman Province, Iran Iran J Parasitol
Background: Intestinal parasitic infections have a worldwide distribution. High prevalence of intestinal parasitic infections in individuals with low socioeconomic status and environmental conditions was found. No study has ever been conducted on the prevalence of these infections in Jiroft. Therefore, in this study prevalence of intestinal parasitic infections was evaluated in Jiroft, Kerman Province, Iran. Methods: A total of 1060 individuals from rural and urban areas of Jiroft were sampled accidentally, during 2013-2014. Fresh stool samples were collected from all individuals and examined by formalin ether concentration and agar plate culture. Direct examination was performed on watery samples. Results: Out of 1060 individuals, 563 (53.1%) and 497 (46.9%) people were from rural and urban areas, respectively. In general, 297 individuals (28%) were infected with intestinal parasites. The prevalence of infection for protozoa and helminthes infections were 27.4% and 1.8%, respectively. The most prevalent protozoans were Blastocystis hominis (13.7%) and Giardia lamblia (7.8%), and that of helminth was Hy-menolepis nana (1.1%). Conclusion: Intestinal protozoan parasites were more prevalent than helminth parasites. Source of water supply and personal hygiene were important factors in the distribution of parasites in the study area.
Türkiye'deki Bir Üniversite Hastanesinde Blastocystis hominis Enfeksiyonunun Karakteristiği
2007
ÖZET: Blastocystis (B.) hominis enfeksiyonunun karakteristiğini belirlemek amacıyla 770 kişinin dışkı örneği hem basit hem de konsantrasyon yöntemiyle, hem lugol hem de trikrom boyası ile boyanarak Türkiye'de Hacettepe Üniversitesi Tıp Fakültesi Parazitoloji Laboratuvarı'nda incelenmiştir. 770 örnek arasından 94 (%12,2) tanesinde B. hominis saptanmıştır. Çalışma grubunda en sık rastlanan parazit B. hominis olmuştur. En sık Dientamoeba fragilis ile birlikte saptanmıştır. Gruplar arasında, B. hominis'in insidansı alerjik hastalarda kontrol grubuna göre daha yüksek bulunmuştur. İmmunsüpresif hastalar arasında B. hominis solid tümörü olan hastalarda belirgin olarak yüksek bulunmuştur. Dışkılarında sadece B. hominis saptanan 48 kişide en sık semptom karın ağrısı olarak saptanmıştır. Trikrom boyası ile birlikte konsantrasyon tekniği, basit yaymanın lugol ile boyanmasına göre daha duyarlı bulunmuştur. Solid tümörlü hastalarda B. hominis enfeksiyonunu ve B. hominis ve D. fragilis birlikteliğinin anlaşılması için daha fazla sayıda hasta ile araştırmalar planlanmalıdır. Anahtar Sözcükler: Blastocystis hominis, Dientamoeba fragilis, Solid tümörler, Trikrom boyası
BMC Infectious Diseases, 2021
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.
Revista do Instituto de Medicina Tropical de São Paulo, 2016
We studied the prevalence of intestinal parasites (IPs), their risk factors and associated symptoms among patients with gastrointestinal disorders. A total of 1,301 participants aged 22 days-90 years were enrolled in this study. We used a structured questionnaire to obtain socio-demographic and stool examination to investigate intestinal parasite infections. Data analysis was performed using SPSS16. The overall prevalence of intestinal parasites (IPs) was 32.2% (419/1,301). Three hundred and fifty nine cases/1,301 (27.6%) were infected with a single parasite and 60/1,301 cases (4.6%) presented polyparasitism. The most common IP was Blastocystis sp. 350/1,301 (26.9%), followed by Entamoeba coli 38/1,301 (2.92%), Giardia lamblia 30/1,301 (2.3%) and Cryptosporidium spp. 17/1,301 (1.3%). Regarding the socio-demographic variables, educational status (p = 0.001), contact with domestic animals and soil (p = 0.02), age above 15 years (p = 0.001) and seasons (p = 0.001) were significantly as...
Journal of Medical Microbiology and Infectious Diseases, 2018
Introduction: Intestinal parasitic infections are among the most common diseases worldwide and are significant indicators of the health status of communities, especially in developing countries. This study aims to determine the prevalence of intestinal parasites infection in patients referring to Kashan diagnostic laboratories from July 2015 to August 2018. Methods: This cross-sectional study was carried out on 6921 patients referring to medical diagnostic laboratories, Kashan, central Iran. Fecal specimens were examined by direct smear and formalin-ether concentration methods. The results together with risk factors including sex, age were recorded and analyzed by descriptive statistics using SPSS 16 software. Results: Out of the 6921 individuals examined, 3636 (52.5%) were male and 3285 (47.5%) were female. Microscopy revealed the prevalence of parasitic infection by 4.96% (4.96 ± 0.5). Totally 5.1% of males and 4.6% of females had intestinal parasite infections. No significant association was seen between sex, seasons, and parasite infections. Rate of infection to intestinal parasites were Blastocystis spp. (3.06%), Entamoeba coli (0.95%), Giardia intestinalis (0.59%), Iodamoeba butschlii (0.23%), Endolimax nana (0.20%), Entamoeba hartmanni (0.20%), Dientamoeba fragilis (0.14%), Chilomastix mesnili (0.07%), Entamoeba histolytica/Entamoeba dispar (0.05%), Hymenolepis nana (0.01%) was the only intestinal worm that observed in one individual. The results showed that 4.48% of the examined individuals were infected with one parasite, 0.39% with two and 0.08% with 3 or more parasites. Conclusion: The prevalence of intestinal parasites in our study was lower than those from other areas of Iran and other countries, indicating an increase in health status as well as public awareness of infectious diseases.