scholarly journals Spatial Distribution of Common Pathogenic Human Intestinal Protozoa in Iran: A Systematic Review

Author(s):  
Mehdi MOHEBALI ◽  
Hossein KESHAVARZ ◽  
Mohammad Javad ABBASZADEH AFSHAR ◽  
Ahmad Ali HANAFI-BOJD ◽  
Gholamreza HASSANPOUR

Background: Pathogenic intestinal protozoa are considered as a serious public health problem in developing countries. This study aimed to elucidate the overall prevalence and spatial distribution of three common human pathogenic intestinal protozoan infections in Iran. Methods: Six English and Persian databases were explored for published papers on the prevalence of Entamoeba histolytica/dispar, Giardia lamblia, and Cryptosporidium spp. in the general population of Iran from 2000 to 2015. All eligible data were collected using a pre-designed data extraction form, and the overall prevalence was estimated using a random-effects meta-analysis model. We used ArcMap for mapping the prevalence of the studied protozoa and clustering analysis. Results: Altogether, 118 eligible papers from 24 provinces of Iran were included and analyzed. The weighted prevalence of E. histolytica/dispar, G. lamblia, and Cryptosporidium spp. infection among Iranian general population were calculated 1.3% (95% CI 1.1-1.5%), 10.6% (95% CI 9.6-11.5%) and 2% (95% CI 1.5-2.5%), respectively. Conclusion: Our findings indicated human intestinal protozoan infections caused by E. histolytica/dispar, G. lamblia, and Cryptosporidium spp. have still public health importance in some parts of Iran.  

2015 ◽  
Vol 34 (1) ◽  
pp. 60
Author(s):  
Nurhayati Nurhayati

AbstrakInfeksi protozoa intestinal masih merupakan masalah kesehatan masyarakat di negara tropis dan negara berkembang. Yang termasuk ke dalam protozoa intestinal patogen di antaranya adalah G. lamblia dan E. histolitika.Telah dilakukan penelitian terhadap anak binaan Rumah Singgah “Amanah”, Kelurahan Rimbo Kaluang, Kecamatan Padang Barat, Kota Padang. Pemeriksaan tinja dilakukan terhadap 66 anak dengan metode langsung menggunakan eosin dan lugol. Tujuan penelitian ini adalah untuk mengetahui gambaran infeksi protozoa intestinal pada anak binaan rumah singgah Amanah.Telah dilakukan penelitian di Rumah Singgah “Amanah”, Kelurahan Rimbo Kaluang, Kecamatan Padang Barat, Kota Padang, terhadap anak biaHasil penelitian ini menunjukkan bahwa anak-anak yang terinfeksi protozoa intestinal sebesar 40,91%. Berdasarkan jenis spesies, distribusi frekuensi terbanyak yang menginfeksi anak adalah G. lamblia yaitu 37,88%, sedangkan infeksi oleh E. histolitika adalah 3,03%. Frekuensi infeksi G. Lamblia lebih tinggi pada umur < 10 tahun yaitu 27,27%, tetapi pada infeksi E. histolitika terlihat tidak ada perbedaan. Distribusi infeksi berdasarkan jenis kelamin hampir sama pada G. lamblia maupun E. histolitika. Berdasarkan pekerjaan, lebih separuh anak binaan yang terinfeksi protozoa intestinal bekerja sebagai penjaja makanan.Kata kunci: Protozoa intestinal, G. lamblia, E. histolitikaAbstractPrevalence of intestinal protozoan infection in Rumah Singgah Amanah, Kota Padang. Intestinal protozoan infection is still a public health problem in tropical countries and developing countries. The intestinal protozoan pathogen of which is G. lamblia and E.histolitika.This research is descriptif study and it was conducted in Rumah Singgah Amanah, Kelurahan Rimbo Kaluang, Kecamatan Padang Barat, Kota Padang. Stool examination has been carried out to 66 children by direct fecal examination method using eosin and Lugol. The purpose of this research is to know the description of intestinal protozoan in fection in Rumah Singgah Amanah.Prevalence of intestinal protozoa infection was 40,91%, the highest frequent infection was G. lamblia which was 37.88%, E. histolitika was 3.03%. FrequencyARTIKEL PENELITIAN61of G. lamblia infection was higher in age <10 years is 27.27%. There was no different in age in E.histolytica infection. There was no different in sex in both infection. Half of children with intestinal protozoa infection were food seller.Key words : Intestinal Protozoa, G. lamblia, E. histolitika


2017 ◽  
Vol 9 (1) ◽  
pp. 22
Author(s):  
Esy Maryanti ◽  
Suri Dwi Lesmana ◽  
Hendro Mandela

Diarrhea is still a public health problem, especially in developing countries. Diarrhea causes morbidity and highmortality in children. Diarrhea can be caused by viruses, bacteria, parasites and food poisoning. One of the parasitethat can cause diarrhea is intestinal protozoa. Lately, attention to intestinal opportunistic protozoan infections isincreasing. Opportunistic intestinal protozoa infection is an infection by intestinal protozoa that had not consideredimportant and now can cause disease in humans. Cryptosporidium sp, Cyclospora cayetanensis, Isospora belii andBlastocystis hominis are opportunistic intestinal protozoa. The clinical manifestations of the infection depends on theimmune status of patients, ranging from asymptomatic in immunocompetent individuals to chronic diarrhea not curedand fatal in patients imunokompromis. This study aims to detect opportunistic intestinal protozoa in children withdiarrhea patients in health centers Inpatient Pekanbaru used modified acid fast stain procedure. A total of 76 samplestested positive obtained 22.3% of opportunistic intestinal protozoa found that 9.2% were infected with Cryptosporidiumsp, Cyclospora infection were 2.6% and Blastocystis hominis 10.5%, while Isospora not found.


Author(s):  
Tatsuya Yoshihara ◽  
Kazuya Ito ◽  
Masayoshi Zaitsu ◽  
Eunhee Chung ◽  
Izumi Aoyagi ◽  
...  

Coronavirus disease 2019 (COVID-19) has become a serious public health problem worldwide. In general, healthcare workers are considered to be at higher risk of COVID-19 infection. However, the prevalence of COVID-19 among healthcare workers in Japan is not well characterized. In this study, we aimed to examine the seroprevalence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) antibodies among 2160 healthcare workers in hospitals and clinics that are not designated to treat COVID-19 patients in Japan. The prevalence of SARS-CoV-2 immunoglobulin G was 1.2% in August and October 2020 (during and after the second wave of the pandemic in Japan), which is relatively higher than that in the general population in Japan (0.03–0.91%). Because of the higher risk of COVID-19 infection, healthcare workers should be the top priority for further social support and vaccination against SARS-CoV-2.


2017 ◽  
Vol 72 (1) ◽  
pp. 3-11 ◽  
Author(s):  
Yohannes Samuel Tiku ◽  
Tefera Chane Mekonnen ◽  
Shimelash Bitew Workie ◽  
Endale Amare

Background: Globally, a large number of children aged 6–59 months are affected by anaemia. In Ethiopia, like other developing countries, more than 40% of children under 5 years are affected by anaemia. Anaemia during infancy and childhood period is associated with poor health and impaired cognitive development, leading to reduced academic achievement and earning potential in their adult life. The aim of this research was to assess whether anaemia remained a major public health problem among children aged 6–59 months or not in Duggina Fanigo District of Wolaita Zone, South Ethiopia in 2016. Methodology: A community-based cross-sectional study was conducted from February to March 2016, on 404 mothers with children aged 6–59 months who were selected through the systematic sampling method. Socio-demographic and other data on associated factors was collected using a pre-tested questionnaire. Capillary blood was taken from the fingertip of each child and hemoglobin was measured using Haemo-Cue digital photometer. All the necessary safety measures were taken during blood collection. Data analysis was made using SPSS version 21. Multivariable logistic regression analysis was used to assess the association of independent variables with outcome variables and to control the possible confounding factors. Result: The overall prevalence of anaemia was 51.4%. Anaemia was common among young children as compared to older children. After controlling the effect of confounding and adjusting for age, gender and altitude, explanatory variables like low dietary diversity (AOR = 3.24; 95% CI [1.68–6.23]), food insecurity (AOR = 3.63; 95% CI [2.18–6.04]), stunting (AOR = 2.60; 95% CI [1.56–4.35]), underweight (AOR = 2.46; 95% CI [1.29–4.67]) and fever within 2 weeks (AOR = 2.49; 95% CI [1.29–4.81]) prior to the survey were significantly associated with anaemia. In conclusion, the overall prevalence of anaemia among children aged 6–59 months has remained a major public health importance in the study area. Integrated efforts need to be prioritized to improve the health as well as the nutritional status of children aged 6–59 months through appropriate feeding practices in infants and children.


2004 ◽  
Vol 10 (4) ◽  
pp. 397-398 ◽  
Author(s):  
Viroj Wiwanitkit

Dengue infection is a major public health problem, affecting the general population in Southeast Asia. Hematologic aberrations in dengue infection include atypical lymphocytosis, coagulopathy, and predominant thrombocytopenia. Bleeding and other presentations in 30 Thai patients with dengue infection during an endemic season (2003) are presented. A review of the clinical presentation of these patients was performed. All had fever as a chief complaint. The three most common complaints were fever (100%), vomiting (90%), and cough (90%), respectively. Concerning bleeding, only eight cases (26.6%) had signs of bleeding. Those manifestations included petechiae (seven cases, 23.3%) and melena (one case, 3.3%). Skin bleeding (petechiae) due to thrombocytopenia is the most common bleeding manifestation in dengue infection. However, physicians should not overlook bleeding from other less common sites such as the gastrointestinal tract and genitourinary tract.


2019 ◽  
Vol 7 (8) ◽  
pp. 166-174
Author(s):  
Seifu Lemma ◽  
Abeyenh Leza ◽  
Gimete Gercha ◽  
Alemayeh Radii

Brucellosis is a contagious bacterial disease with worldwide importance and affects a number of animal species and human beings. Although brucellosis in domestic animals has controlled in most developed countries it remains an important public health problem in several parts of the world. But in developing countries brucellosis has both animal and public health importance (Walker, 1999; Radostitset al.,2000; Acha, and Szyfers, 2001; Tsolia et al.,2002).


Author(s):  
Silvia Marcela Inca Martínez ◽  
Martha Cecilia Bonilla Caicedo ◽  
Silvana Paola Ocaña Coello

Introduction: Parasitosis is a public health problem that affects millions of people, school-age children are more vulnerable, affects their physical and intellectual development, are transmitted by fecal-oral route, and is associated with poor hygienic and sanitary conditions. In Ecuador they constitute the second reason for medical consultation. Objective: To contribute to the epidemiological knowledge of intestinal parasitosis by protozoa in our environment. Methodology: An experimental descriptive study, with a universe of 80 children, obtaining 55 samples, a direct examination was carried out in preparations with physiological serum and lugol, identifying the parasites by their microscopic morphology. Results: The prevalence of intestinal parasitosis by protozoa was 78.18%, while for the parasites Endolimax nana 30.9% Entamoeba histolytica, 34.5% and Giardia lamblia 14.5%. 40%  of the participants were monoparasitized and 38.2% had polyparasitosis. Conclusion: High prevalence of parasitosis by intestinal protozoa was determined in the children of the Unit with 78.18%. The most prevalent ameboid protozoan was E. nana, followed by the pathogenic protozoan E. histolytica, while G. lamblia was flagellated protozoan identified. The lack of adequate sanitary infrastructure, habits of hygiene, environmental pollution, influence the prevalence of intestinal parasitosis. Keywords: protozoan infections, intestinal diseases, child. RESUMEN Introducción: Parasitosis es un problema de salud pública que afecta a millones de personas, los niños en edad escolar son más vulnerables, afecta su desarrollo físico e intelectual, se transmiten por vía fecal-oral, y está asociada a deficientes condiciones higiénicas y sanitarias. En Ecuador constituyen el segundo motivo de consulta médica. Objetivo: contribuir al conocimiento epidemiológico de las parasitosis intestinales por protozoos en nuestro medio. Metodología: estudio descriptivo experimental, con un universo de 80 niños y niñas, obteniendo 55 muestras, se realizó examen directo en preparaciones con suero fisiológico y lugol, identificando los parásitos por su morfología microscópica. Resultados: La prevalencia de parasitosis intestinal por protozoos fue de 78,18%, mientras que para los parásitos Endolimax nana 30,9%, Entamoeba histolytica 34,5% y Giardia lamblia 14,5%. El 40% de los participantes fue monoparasitado y el 38,2% presentó poliparasitosis. Conclusiones: Se determinó alta prevalencia de parasitosis por protozoos intestinales en los niños y niñas de la Unidad con un 78,18%. El protozoo ameboideo de mayor prevalencia fue E. nana, seguido del protozoo patógeno E. histolytica, mientras que G. lambia fue protozoo flagelado identificado. La falta de una adecuada infraestructura sanitaria, hábitos de higiene, contaminación ambiental, influyen en la prevalencia de la parasitosis intestinal. Palabras clave: infecciones por protozoos, parasitosis intestinales, niños.


2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Forest M. Altherr ◽  
Andrew W. Nute ◽  
Mulat Zerihun ◽  
Eshetu Sata ◽  
Aisha E. P. Stewart ◽  
...  

Abstract Background Trachoma is the leading infectious cause of blindness globally. The WHO has recommended the SAFE (Surgery, Antibiotics, Facial cleanliness and Environmental improvements) strategy to eliminate trachoma as a public health problem. The F and E arms of the strategy will likely be important for sustained disease reductions, yet more evidence is needed detailing relationships between hygiene, sanitation and trachoma in areas with differing endemicity. This study addressed whether the regional differences in water, sanitation, and hygiene (WASH) variables were associated with the spatial distribution of trachomatous inflammation-follicular (TF) among children aged 1 to 9 years in the Amhara National Regional State of Ethiopia. Methods Data from 152 multi-stage cluster random trachoma surveys were used to understand the degree of clustering of trachoma on two spatial scales (district and village) in Amhara using a geographical information system and the Getis-Ord Gi* (d) statistic for local clustering. Trained and certified graders examined children for the clinical signs of trachoma using the WHO simplified system. Socio-demographic, community, and geoclimatic factors thought to promote the clustering of the disease were included as covariates in a logistic regression model. Results The mean district prevalence of TF among children aged 1 to 9 years in Amhara was 25.1% (standard deviation = 16.2%). The spatial distribution of TF was found to exhibit global spatial dependency with neighboring evaluation units at both district and village level. Specific clusters of high TF were identified at both the district and the village scale of analysis using weighted estimates of the prevalence of the disease. Increased prevalence of children without nasal and ocular discharge as well as increased prevalence of households with access to a water source within 30 minutes were statistically significantly negatively associated with clusters of high TF prevalence. Conclusions Water access and facial cleanliness were important factors in the clustering of trachoma within this hyperendemic region. Intensified promotion of structural and behavioral interventions to increase WASH coverage may be necessary to eliminate trachoma as a public health problem in Amhara and perhaps other hyper-endemic settings.


Pathogens ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 894
Author(s):  
Dongmi Kwak ◽  
Min-Goo Seo

Feral cats that are roaming outside can serve as reservoirs for zoonotic pathogens, negatively impacting public health. They may experience high levels of parasitic infection. Some gastrointestinal protozoa and microsporidia possessing zoonotic potential in cats include Cryptosporidium spp., Giardia duodenalis, Blastocystis sp., Enterocytozoon bieneusi, and Toxoplasma gondii. Here, we show the infection rates and risk factors of intestinal protozoa and microsporidia detected from shelter cats on Jeju Island in South Korea in 2020. Among 158 cats, we detected genes for five internal protozoa and microsporidia, namely, Cryptosporidium felis (0.6%), G. duodenalis (3.8%), Blastocystis sp. (0.6%), E. bieneusi (3.8%), and T. gondii (1.3%). Furthermore, 16 cats (10.1%) were PCR-positive for at least one protozoan or microsporidium. To our knowledge, this study is the first to describe the existence of C. felis, G. duodenalis assemblage F, Blastocystis sp. ST4 subtype, and E. bieneusi genotype Peru11 in cats in South Korea. Despite the small number of positive samples, this study expands our understanding of the incidence of zoonotic gastrointestinal protozoa and microsporidia in shelter cats and genetically characterizes the isolates found in the infected animals. Moreover, these findings emphasize the need for a better control strategy on protozoa and microsporidia in cats, tailored to their individual needs, to protect animal and public health.


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