Prevalence Of Giardiasis Research Articles

Occurrence and assemblage distribution of Giardia Duodenalis in symptomatic and asymptomatic patients in southeastern Iran (2019–2022)

BackgroundThe ubiquitous protozoan parasite Giardia duodenalis is a major contributor to the global burden of diarrhoea, particularly in young children living in poor-resource regions. Although rarely mortal, giardiasis is associated with growth retardation and cognitive impairment in early childhood. Here we investigate the epidemiology of human giardiasis in Iranshahr (south-eastern Iran), a region where this information was previously lacking.MethodsStool samples were collected from 17,455 outpatients and inpatients attended at three major hospital settings during April 2020 and March 2022. Microscopy was used as a screening method for the presence of Giardia cysts, and the identification of G. duodenalis assemblages was carried out using PCR and Sanger sequencing.ResultsThe overall prevalence of giardiasis was 1.87 (326/17,455; 95% CI: 1.7–2.1). Being female was positively associated with higher odds of giardiasis (p = 0.014). Individuals without diarrhoea were less likely to have giardiasis (p = 0.022). Individuals attending the Iran Hospital were more likely to harbour G. duodenalis infections compared to those attending at the Khatam Hospital and the Clinical Reference Laboratory (p = 0.001). Our sequence analyses revealed the presence of assemblages A (56.5%, 13/23), B (39.1%, 9/23), and A + B (4.4%, 1/23). No association was observed between the occurrence of a given assemblage and the occurrence of diarhroea.ConclusionsGiardia infections were found at relatively low prevalence rates in both symptomatic and asymptomatic individuals seeking medical attention. Being female, having diarrhoea, and being sampled during 2020–21 were predictors of giardiasis. Although limited, our molecular data indicate that some Giardia infections may be zoonotic in nature. These data should be corroborated and expanded in future epidemiological studies targeting simultaneously human, animal, and environmental (water) samples to improve our understanding of the epidemiology of giardiasis in Iran.

Evaluation of the prevalence of giardiasis and associated factors in Wardak province, center of Afghanistan

Introduction: Giardia intestinalis is a causative agent of gastrointestinal infections worldwide. Contaminated food, feces, drinking water (orofecal route), and factors like economic conditions, culture, and behavioral factors contribute to its transmission. Wardak province is located in the central region of Afghanistan, divided into eight districts, with a population of 656,720. Methods: A total of 274 patients with diarrhea referred to Wardak Hospital were studied, and among them, 17 individuals (10 males (58.8%) and 7 females (41.2%) tested positive for Giardia spp. by microscopy during 2023. In this cross-sectional study, socioeconomic, cultural, and symptomatology information were collected. The association between risk factors and intestinal parasitic infections was analyzed using Chi-Square and Fisher's exact tests with SPSS 26 and GraphPad Prism 8 software at a significance level of P ≤ 0.05. Results: More than half of the patients were under 30 years old. Most cases of the disease were observed in hot seasons (spring and summer). A significant correlation was found between the prevalence of giardiasis and factors such as close contact with animals, the use of unfiltered water, soil contact, and warmer seasons. No significant correlation was observed between economic status and travel history. 85% of patients had watery diarrhea, and 15% had bloody diarrhea. Conclusion: This is the first epidemiological study conducted in Wardak province, central Afghanistan. The findings reveal the prevalence of giardiasis and its interaction with multiple risk factors. This study suggests that giardiasis is an important causative factor for gastrointestinal diseases in the study region.

Trends and clinico-epidemiological profile of patients with Giardiasis: Five-year experience from a university hospital of northern India

Background: Giardiasis is an important cause of diarrheal disease and is associated with morbidity in children and adults worldwide. We aimed to study the prevalence of Giardiasis, its clinical presentations, seasonal trends in detection, and coinfection with other intestinal parasites along with comparison of fecal antigen and microscopy for the detection of Giardiasis. Materials and Methods: It is a retrospective study conducted from Jan. 2017 to Dec. 2021 at our university hospital. Iodine and normal saline mounts and enzyme-linked immunosorbent assay (ELISA) were used for the detection of Giardiasis in stool samples. Sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy of tests were computed. Results: Of 8364 patients, 432 (5.2%) had Giardiasis by microscopy and/or ELISA. Giardiasis was more common in males compared to females (318/5613 [5.6%] vs. 114/2751 [4.1%]; P = 0.003) and among those ≤10 y compared to older individuals (102/560 [18.2%] vs. 330/7804 [4.2%]; P <0.0001). Most cases were detected in the month of May to October. The most common clinical presentation was diarrhea (80.1%) and abdominal pain (72.9%) followed by malnutrition (60.2%) and loss of appetite (46.8%). Using microscopy as gold standard, sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy of ELISA were 95%, 91%, 91%, 95%, and 93%, respectively. Conclusion: Awareness and knowledge amongst the primary healthcare professionals and family physicians will help in early diagnosis and treatment of Giardiasis. Fecal antigen detection should be done along with microscopy for detection of Giardiasis.

Evaluation of Giardiasis in Companion Birds in Mashhad, Iran

Introduction: Giardia spp. are parasitic protozoans that infect the digestive system of ornamental birds, especially in Psittaciformes, with different prevalence in various species. Symptoms of Giardia infection vary from no noticeable signs in adult birds to poor growth, weakness, anorexia, ruffled feathers, and diarrhea in chicks. This study aimed to evaluate the prevalence of giardiasis in some parrots referred to a private veterinary clinic in Mashhad, Iran, during 2022. Case report: Feces of 215 birds suspected of being infected with Giardia spp. were collected. The birds were visited at one of the clinics in Mashhad, Iran, in 2022. Wet smear was prepared from their fresh feces and then sent to the laboratory department of the clinic for diagnosis. The parrots included adult cockatiels, cockatiel chicks, lovebirds, African grey parrots, and Green-cheeked parakeets. After the final diagnosis, metronidazole was administered orally at a dosage of 50 milligrams per kilogram of body weight every 12 hours for 5 consecutive days. Sick birds were tested again after the treatment to confirm they were parasite-free. The obtained results of the laboratory indicated 60 positive Cockatiels (47.6%), 10 positive cockatiel chicks (43.4%), 4 positive lovebirds (14.2%), 2 Green-cheeked parakeets (8.6%), and only 1 positive African grey parrot (6.6%). Among the positive cases, the severity of infection varied, with some birds showing severe, moderate, or mild infection levels. Upon a second examination, birds with mild and moderate contamination were found to be disease-free, while those with severe contamination required further treatment. Conclusion: The results suggested that treatment with metronidazole for 5 consecutive days was effective against mild to moderate infection in sick parrots. However, birds with severe conditions need to continue the treatment procedure.

Gastrointestinal parasites in captive olive baboons in a UK safari park.

From the safety inside vehicles, Knowsley Safari offers visitors a close-up encounter with captive olive baboons. As exiting vehicles may be contaminated with baboon stool, a comprehensive coprological inspection was conducted to address public health concerns. Baboon stools were obtained from vehicles, and sleeping areas, inclusive of video analysis of baboon–vehicle interactions. A purposely selected 4-day sampling period enabled comparative inspections of 2662 vehicles, with a total of 669 baboon stools examined (371 from vehicles and 298 from sleeping areas). As informed by our pilot study, front-line diagnostic methods were: QUIK-CHEK rapid diagnostic test (RDT) (Giardia and Cryptosporidium), Kato–Katz coproscopy (Trichuris) and charcoal culture (Strongyloides). Some 13.9% of vehicles were contaminated with baboon stool. Prevalence of giardiasis was 37.4% while cryptosporidiosis was <0.01%, however, an absence of faecal cysts by quality control coproscopy, alongside lower than the expected levels of Giardia-specific DNA, judged RDT results as misleading, grossly overestimating prevalence. Prevalence of trichuriasis was 48.0% and strongyloidiasis was 13.7%, a first report of Strongyloides fuelleborni in UK. We advise regular blanket administration(s) of anthelminthics to the colony, exploring pour-on formulations, thereafter, smaller-scale indicator surveys would be adequate.

Individual and Community-Level Risk Factors for Giardiasis in Children under Five Years of Age in Pakistan: A Prospective Multi-Regional Study.

This study aimed to estimate the prevalence of Giardia lamblia infection and identify associated risk factors at both individual and community levels in a pediatric population in different agroecological zones of Khyber Pakhtunkhwa, Pakistan. A community-based cross-sectional study was conducted from March to December 2022. Using stratified sampling, 1026 households were recruited from nine agroecological zones. Stool samples were collected from 1026 children up to the age of five years and processed for detection of Giardia using a commercial ELISA kit. Data on potential risk factors were collected using a pre-structured questionnaire. A multivariable logistic regression model was used to identify risk factors associated with giardiasis. The study found that the prevalence of giardiasis in the study area was 3.31%. Children aged 13-24 months were found to be at higher risk for giardiasis. Illiterate mothers and fathers attending daycare institutions/kindergartens, mothers not practicing hand washing during critical times, households with companion animals, and homes where stray dogs/cats enter were identified as predictors of giardiasis at the individual level. Children living in sub-mountain valleys use un-piped water, inadequate domestic water storage vessels, drink un-boiled or unfiltered water, live near rubbish heaps or un-paved streets/pathways, and have unimproved latrine facilities were identified as risk factors of giardiasis at the community level. The study highlights the need for integrated intervention approaches at both individual and community levels to reduce the incidence of giardiasis in Khyber Pakhtunkhwa, Pakistan. Interventions aimed at promoting behavioral change and providing safe and adequate water sources, combined with individual-level interventions such as hand washing and awareness of giardiasis prevention methods, would be critical to addressing this health concern. Inter-sectoral collaboration between the health sector and other sectors would also be necessary to achieve meaningful progress in reducing the incidence of giardiasis in resource-limited areas.

Meta-analysis of the prevalence of Giardia duodenalis in sheep and goats in China

Giardia duodenum (G. duodenalis) can cause giardiasis and infect a variety of hosts. So far, there have been no detailed data regarding the positive rate of G. duodenalis in sheep and goats in China. Here, a systematic literature review was carried out to investigate the epidemiology of G. duodenalis in sheep and goats in China. To perform the meta-analysis, the databases CNKI, VIP, WanFang, PubMed, Web of science and ScienceDirect were employed for screening studies related to the prevalence of G. duodenalis in sheep and goats in China. The total prevalence of G. duodenalis in sheep and goats was estimated to be 7.00% (95% CI: 4.00–10.00). In the age subgroup, the prevalence of G. duodenalis in sheep and goats of >12 months (11.29%; 95% CI: 8.08–14.97) was higher than that in sheep and goats of ≤12 months (7.57%; 95% CI: 3.95–12.24). An analysis based on seasons showed that the prevalence of G. duodenalis in sheep and goats was higher in summer (11.90%; 95% CI: 0.50–35.05) than that in other seasons. The prevalence of G. duodenalis in sheep and goats after 2016 was 8.57% (95% CI: 5.34–11.79), which was higher than others. The highest prevalence of G. duodenalis in sheep and goats was 13.06% (95% CI: 6.26–19.86) recorded in Southwestern China. The prevalence of Giardia infection in sheep (7.28%; 95% CI: 2.30–14.73) was higher than that in goats (5.43%; 95% CI: 2.73–8.98). The NOAA's National Center for Environmental Information (https://gis.ncdc.noaa.gov/maps/ncei/cdo/monthly) was used to extract relevant geoclimatic data (latitude, longitude, elevation, temperature, precipitation, humidity, and climate). By analyzing the data of each subgroup, it was shown that region, genetype, and climate were potential risk factors for giardiasis prevalence in sheep and goats. Based on the analysis of common factors and geographical factors, it is recommended to strengthen effective management measures (e.g. ventilation and disinfection in warm and humid areas) and formulate relevant policies according to local conditions. Breeders should strengthen the detection of G. duodenalis in sheep and goats, customize corresponding control measures according to the diet and living habits of sheep and goats, and strengthen the protection of sheep and lamb calves, so as to reduce the incidence rate and reduce the economic loss of China's animal husbandry.

Giardíase em crianças e cães, e o primeiro relato de infecção por assemblage E em cães do nordeste brasileiro

Diagnosis is crucial for controlling giardiasis. We determined the prevalence and genetically characterize isolates of Giardia duodenalis of children and dogs from rural communities in northeastern Brazil. G. duodenalis cysts were concentrated by centrifugal flotation/sedimentation. Molecular characterization was carried out using the loci ssu-rRNA, bg, tpi, and gdh. By parasitological techniques, Giardia spp. infection was detected in 72/192 children (37.5%; 95% CI: 30.6%-44.7%) and 24/139 dogs (17.3%; 95% CI: 11.4%-24.6%). By molecular analysis, infection was detected in 60/141 children (42.5%; 95% CI: 34.3%-51.2%) and 26/92 dogs (28.3%; 95% CI: 19.4%-38.6%). The total prevalence of giardiasis was 54.9% in children (106/193; 95% CI: 47.1%-61.6%) and 32.9% in dogs (47/143; 95% CI: 25.2%-41.2%). Zoonotic assemblages A and B of G. duodenalis were detected in children, and assemblage E of G. duodenalis was detected in one child and two dogs. Parallel use of parasitological and molecular techniques proved to be a more effective strategy for detecting giardiasis in children and dogs from endemic areas.

Copro-ELISA-based prevalence and risk determinants of giardiasis in cattle and sheep populations raised by socio-economically deprived urban nomadic communities located in and around Multan, Punjab-Pakistan

ABSTRACT This study reports the copro-prevalence of giardiasis in sheep and cattle populations of nomadic communities in Multan-Pakistan. For this purpose, a total of 184 faecal samples were collected from cattle (n = 92) and sheep (n = 92) raised by the nomads. All samples were analyzed by using species-specific ELISA kits for the detection of copro-antigen of Giardia duodenalis. Results showed that the overall prevalence of giardiasis was 21.20%, whereas, in sheep and cattle, the prevalence rates were 19.18% and 23.91%, respectively. Age, clinico-physical status and drinking water source showed significant association (P < 0.05) with giardiasis in both sheep and cattle. Breed, history of gastrointestinal problems and routine vaccination were also significant (P < 0.05) risk factors in sheep but not in cattle. Deworming history had a significant association (P < 0.05) with giardiasis in cattle population only. Conversely, sex, herd size, farmers’ educational status, feeding pattern, physiological status, contact with wildlife and Giardia-susceptible animals and hygienic condition of housing facility showed non-significant association (P > 0.05) with giardiasis. In conclusion, the cattle and sheep raised by the nomads are infected with giardiasis and may pose a serious threat to susceptible animal and human populations in their surrounding regions.

Prevalence of giardiasis of stray cats in the Daejeon city

Prevalence of giardiasis of stray cats in the Daejeon city

Prevalence of Giardia lamblia among children in Sulaimani city, Iraq

Intestinal protozoan parasites Giardia lamblia (G.L) (Giardia duodenalis, G. lamblia, or G. intestinalis) is a flagellated zoonotic parasite are extremely common in impoverished nations, posing major public health risks. The majority of Giardia lamblia infections are asymptomatic. However, sometime abdominal pain, diarrhea, and fever are the most common clinical symptoms of giardiasis, especially in children. The aim of this study was to investigate the prevalence of G.L among children in Sulaimani city, North of Iraq. This study was conducted from January to April 2022. The incidence of giardiasis was investigated in Jamal Ahmad Rashid Pediatric Teaching Hospital. A total of (6600) samples from general stool exam (GSE) by direct microscopic examination were studied. Male and Female, Personal Hygiene, and Eating Habits were all investigated in order to identify a link between giardiasis prevalence and these characteristics. Out of 6600 samples of GSE examined, 19 (0.2%) were positive for G.L. The prevalence rate of G.L among males were 11 (57.9%) which is higher than female 8 (42.1%). In prevalence of G.L according to months, the highest prevalence rate was recorded in April and the lowest prevalence rate were in January and February for both (males and females).

Prevalence of Giardiasis and Entamoeba Species in Two of the Six Governorates of Kuwait

Intestinal parasitic infections are a global concern owing to elevated rates of morbidity and mortality in many parts of the world. Increased rates of intestinal parasitic infections are observed in developing and low-income countries. In Kuwait, many expatriates and foreigners hail from endemic countries, thus increasing the rate and risk factor of infection. This retrospective study is aimed at assessing the prevalence of Giardia lamblia and Entamoeba sp. in stool samples handled by two of Kuwait's general hospitals during the period from January 2018 to July 2019: Mubarak Al Kabeer (serving Hawalli governorate population) and Aladan hospitals (serving Mubarak Al Kabeer governorate population) serving 27% of total Kuwait population with Kuwaitis making up only 32%. A total of 9,653 samples were tested for consistency and the availability of any parasitic particles using visual, direct wet mount, and concentration method. Statistical analysis was implemented using SPSS statistical program, at p < 0.05. Of all the 9,653 tested stool samples, 74 were positive for G. lamblia or Entamoeba sp. This represented a mere 1% rate of infection and showed no significant correlation to the prevalence of intestinal parasite infections in Kuwait. On the other hand, comparing the rate of infection in different seasons revealed an increased rate of infection during spring compared to other seasons (p = 0.03). Findings revealed low rates of intestinal parasitic infection within the two governorates of Kuwait representing no statistical significance to the distribution of the investigated parasites in Kuwait. This may be attributed to improved living conditions and healthcare. Elevated infection rates in spring in relation to other seasons raised the importance of increasing public awareness during camping season for maintaining proper personal hygiene and waste management to contain and decrease the rate on infection.

Частота, предиктори та критерії діагностики лямбліозу в дітей

Актуальність. Поширеність лямбліозу серед дітей становить 355 випадків на 100 тис. дитячого населення, при цьому 80 % випадків інвазії припадає на дітей, молодших 14 років. Актуальність високої поширеності протозойної патології у дітей зумовлена тим, що її прояви часто маскуються під різні патологічні стани. Мета. Вивчення частоти, предикторів і критеріїв діагностики лямбліозу в дітей. Матеріали та методи. Дизайн дослідження — контрольоване рандомізоване. У дослідження включені діти, хворі на лямбліоз (n = 55), віком від 3 до 17 років. Група порівняння становила 30 практично здорових дітей. Обстеження хворих і набір матеріалу проводили на базі поліклінічного та гастроентерологічного відділень КМУ «Чернівецька обласна дитяча клінічна лікарня» впродовж 2014–2016 років. Лабораторні та інструментальні дослідження проводилися в українсько-німецькій лабораторії «Букінтермед» та лабораторії дитячого гастроентерологічного центру «Дігест». Використані непрямі (серологічний метод, макроскопія слизової оболонки ДПК при ендоскопічному дослідженні, непрямі ознаки лямбліозу в дуоденобіоптатах) та прямі (мікроскопія калу, дуоденального вмісту, виявлення вегетативних форм лямблій у дуоденобіоптатах під час гістологічного дослідження) методи дослідження. Проводилося анкетування батьків. Відмінності вважалися статистично вірогідними при досягнутому рівні значущості р ≤ 0,05. Результати. Позитивний результат отримано у 29 із 565 обстежених на лямблії осіб (5,1 %). Найчастіше потребували дообстеження на наявність лямблій діти, хворі на хронічну патологію верхніх відділів шлунково-кишкового тракту та гепатобіліарної системи, з алергічними реакціями, дисбіозом кишечника та стійкою еозинофілією крові. Діти, хворі на лямбліоз, вірогідно частіше хворіли на супутню патологію, ніж діти групи порівняння (р &lt; 0,05). У 41,4 % випадків діти проживали в умовах, що не відповідали задовільним, не завжди дотримувалися правил гігієни. Нами встановлені несприятливі фактори антенатального (стан здоров’я матері під час вагітності, перебіг вагітності, наявність професійних шкідливостей), інтранатального (передчасні пологи, стимуляція пологової діяльності та кесарів розтин, пологова травма й асфіксія у дітей) та постнатального (тривалість грудного вигодовування, супутня патологія) періодів. Усі гістологічні ознаки можуть бути використані як імовірні критерії лямбліозу в дітей, однак із найбільшою вірогідністю можна використовувати таку ознаку, як наявність ділянок десквамації епітелію ворсинок з одночасним переважанням в інфільтраті еозинофілів і тучних клітин. Висновки. Частота лямбліозу у дітей і підлітків дорівнює 5,1 %. Встановлені нами анамнестичні фактори (соціальні, гігієнічні, медико-біологічні) можна розглядати як предиктори розвитку лямбліозу в дітей. У клініці лямбліозу домінує ураження травного тракту — у 96,3 % дітей. Для підвищення точності діагностики лямбліозу в дітей необхідно використовувати комплекс прямих і непрямих методів діагностики.

Molecular characterization of Giardia lamblia and risk factors for giardiasis among immunocompromised patients in southern Brazil.

Acute Giardia infections often cause diarrhea and stomach upset. Chronic infections can lead to malnutrition, micronutrient deficiencies, malabsorption and weight loss. This study assessed the prevalence of G. lambia infection and assessed associated risk factors among immunocompomised patients undergoing chemotherapeutic treatment in southern Brazil. A total of 110 immunocompromised patients in Pelotas, RS, Brazil, consented to participate in this study and were recruited. Socioeconomic and epidemiological profile of patients was collected by questionnaire. The prevalence for Giardia were determined through microscopy by the centrifugation-flotation technique using stool samples of every patient. In addition, the genetic characterization of the parasite was carried out by amplifying and sequencing the glutamate dehydrogenase (gdh) gene. By microscopy, the prevalence of giardiasis was 17.3% (19/110). Furthermore, the DNA sequences revealed that 7 (36.8%) out of 19 isolates belonged to assemblage B, while 6 of them (31.6%) belonged to assemblage C, 5 (26.3%) to assemblage A and 1 (5.3%) to assemblage D. Risk factors (p ≤ 0.05) for giardiasis were schooling level (OR=8.0 (1.02 - 62.91) sharing a house with more than three people (OR=14.1 (3.77 - 52.51), water sources (OR=38.9 (10.4 - 145.7), sewage treatment (OR=14.2 (3.1 - 65.5), waste destination (OR=7.44 (2.0 - 27.3), owning pets (OR=4.6 (1.0 - 21.2) and cultivating a vegetable garden (OR=4.2 (1.3 - 13.6). The prevalence of G. lamblia in immunocompromised patients was considered elevate with the identification of four assemblage of the parasite (A, B, C and D).

Prevalence and Molecular Characterization of Giardia duodenalis Assemblage D of Dogs in Egypt, and Its Zoonotic Implication

Background, Methods: To elucidate the prevalence and molecular characterization of Giardia infection in dogs, a cross-sectional study was performed on stray and housed dogs from different localities of Egypt. Results: A total of 986 fecal specimens were collected from dogs. The overall infection rate was 8.5%. The diarrheic dogs revealed higher prevalence of 14.43% than asymptomatic animals. The infection was more prevalent in younger dogs ( &lt; 6 months) (9.5%) compared to older animals. Higher prevalence of infection was observed during the cold winter months (11.24%). The community owned dogs (stray dogs in the street) showed (11.75%) higher prevalence rate than pet dogs in the household environment (5.59%). Moreover, it was found that dogs fed on undercooked meat, and offal's were showing higher prevalence of giardiasis than dogs fed on canned meat. On the other hand, dogs subjected to regular grooming and good hygienic practices had lesser prevalence rate of the infection compared to unclean neglected dogs. Conclusions: The sequencing and phylogenetic analysis of the amplicons of 18SrRNA gene of G. duodenalis revealed that; they were closer to assemblage D necessitating urgent attention due to their zoonotic importance.

Current state of infection and prevalence of giardiasis in Malaysia: a review of 20 years of research.

BackgroundGiardiasis is a neglected parasitic zoonotic disease caused by Giardia duodenalis that is often overlooked despite the damage inflicted upon humans and domestic/wild animals. Lack of surveillance studies, low sensitivity of diagnostic tools, and resistance to giardiasis treatment add to the challenge in managing giardiasis, leaving a gap that continues to render giardiasis a silent threat to public health worldwide. This situation is not much different in Malaysia, where giardiasis remains a public health problem, especially in the indigenous communities. Realizing the existence of gaps in the literature and information on giardiasis in Malaysia, this review aims to revisit and update the situation of giardiasis in Malaysia based on articles published in 20 years from 2000 to 2020, providing estimates on the incidence of giardiasis in humans, animals, and the environment, which may inform efforts to prevent and control the impact of giardiasis in the country.MethodologyWe searched PubMed, Science Direct, and Scopus using MeSH terms and text keywords “Giardia duodenalis OR Giardia intestinalis OR Giardia lamblia OR intestinal protozoa AND Malaysia”. Information was collected from all giardiasis reports published between 2000 and 2020.ResultsGiardiasis in Malaysia is more prevalent among the poorest segments of the population, namely the indigenous communities and people living in densely populated areas such as slums and prisons, due to low standard of personal hygiene, unsafe water resources, and improper sanitation. While the prevalence data is hugely dependent on microscopic fecal examination in epidemiological studies of giardiasis, current studies mostly focused on species identification and genotype distribution by multilocus genotyping. Thus far, the outbreak of giardiasis has not been reported in the country, but the disease was found to be significantly associated with stunting, wasting, and malnutrition among children of the indigenous communities. Surveillance studies also discovered the simultaneous presence of Giardia in the animal-environments, including wild animals, ruminants, and treated and untreated water. The data collected here will be a useful addition to the literature body on giardiasis in Malaysia, which can be exploited in efforts to prevent and control the impact of giardiasis in the country.ConclusionsThe last 10 years have shown that the overall mean rate of giardiasis in Malaysia is quite encouraging at 13.7%. While this figure appears to be declining, there has been a slight increase in the prevalence of underweight, stunting, and wasting among rural children in 2019. The fact that giardiasis is linked to long-term childhood developmental problems, indicates that addressing and providing better disease control against giardiasis should be a priority in supporting the national agenda to achieve Malaysia Global Nutrition Targets by 2025.

Evaluation of the Employment of Four Laboratory Diagnostic Methods in Detecting of Giardia lamblia among Children in Kirkuk City

Background: Giardiasis is the most common cause of diarrhea among people in Iraq, caused by Giardia lamblia parasite. Laboratory diagnosis requires diversity usage of method to reveal the parasite with in different types of specimens. Aim: The aim of this study were to determine the prevalence of giardiasis in Kirkuk city, to assess the efficacy of four different methods employee in detecting Giardia parasite and an attempt to extract and amplify DNA of this parasite using mixed primers of Giardia assemblages A and B. Material and Methods Cross sectional study was carried on a total of 310 stool samples were collected and tested for giardiasis by using direct microscopy, ELISA-corpo-antigen, Lateral immune-chromatography assay (Triage panel) and PCR technique. Results: The overall rate of parasitic infection was (51.93%); Giardia lamblia rate was (20.32%). Giardiasis among males was higher than in females. Traige panel show high efficacy for detecting Giardia lamblia than detecting of Entamoeba histolytica and cryptosporidium. Statistically the differences among direct microscopy, ELISA and Triage panel were not significant. Application of PCR single step technique show high rate of sensitivity than other methods in detecting giardiasis. Amplified Giardia genome length extended from 280 to 750 bps with mean of 437.6 bps. Conclusions: Giardiasis among peoples in Kirkuk city was high especially among males. Triage panel and ELISA were simple and easy, but were less sensitive than conventional microscopy methods. PCR technique using k 725 gene (Mixed primers of assemblages A1, A2 and B) loci was performed for the first time in Kirkuk city with high sensitivity and specificity than other laboratory methods.

Giardiasis and post-infectious bowel syndrome

Post-infectious irritable bowel syndrome — one of the most frequent conditions diagnosed in pediatric gastroenterological practice. According to numerous research parisitosis contributes to the chronology of gastrointestinal tract pathology. it is known that the infection Lamblia intestinalis can increase the risk of developing post-infectious IBS, changing species composition and diversity of the intestinal microbiota, modulating metabolism of the host, the nature of the immune response and adversely affecting the mucosal barrier and the motility of the digestive tract. Importantly, the prevalence of giardiasis in patients with symptoms of IBS and dyspepsia at the moment, it remains at a high level. Further research into the pathogenesis of Lamblia intestinalis infection in patients with IBS will be of great importance in medicine.

Molecular genotyping of Giardia lamblia assemblages by conventional PCR in rural and urban areas in Egypt.

Background Giardiasis is one of the most important parasitic gastro-intestinal infections that affect humans worldwide. Children are the most affected age group either in developing or developed countries. Genotyping of Giardia lamblia by molecular techniques classified it into eight assemblages; of which, assemblages A and B are potentially zoonotic pathogens. This study was done to investigate the prevalence of different Giardia lamblia genotypes by conventional PCR, and to explore the environmental and patientsʼ sociodemographic factors that may affect the disease prevalence. Methods Two hundreds fecal samples were collected at Damanhour General Hospital from patients with gastrointestinal diseases. All samples were examined microscopically, and the positive ones were investigated by conventional PCR. Results Giardiasis was detected in 92 (46%) samples. Eighty-eight samples gave positive results by PCR, 18% of which were assemblage A, 70.5% were assemblage B, and 11.5% were mixed infection of both assemblages. The infection was more prevalent in males, rural patients and the highly educated ones. Conclusions This study presents critical and demonstrative data regarding public health in Egypt. The results reveal that the prevalence of giardiasis is high among both rural and urban patients, particularly in children. It also prevails in patients of all education levels, and patients dealing and not dealing with animals. Moreover, we recommend PCR amplifying the triose phosphate isomerase (tpi) gene in fresh fecal samples as very effective method for the diagnosis and genotyping.

Comparison between Specificity and Sensitivity of Intestinal Giardialamblia Assays in AL-Door District, Salahdin Province, Iraq

The Giardia lamblia is known as a considerable cause of diarrhea in human. Difficulties are confronted in the detection of that parasite in patients’ faces because of intermittent excretion of the parasite.In this study it was determined specificity and sensitivity of floatation methodby zinc sulphate solution and ELISA assay for Giardialamblia detection compared with direct iodine stain methodAmong 82 patients who were attending AL-Door hospital through period of September to December 2018. The prevalence of Giardiasis was 32.9% and 67.1% was negative. As well this study showed that the percentage of G. lamblia infection was 31.7% by direct iodine stain method, 29.3% was by floatation methodand the sensitivity ratio was 92.3%, specificity was 100%,While 32.9% was positive by ELISA assay and the sensitivity ratio was 92.3%, specificity was 94.6%. Also our study found that the prevalence for Giardiasis depending on gender in this study was 67% for male, 33.3% for female. The results of study were showed the prevalence of infection was 23.2% in age group 8-25 years, 7.3% in 26-35 years and 2.4% in age group 36-45 years. The distribution of infection depends on residencewhich was 20.7% for rural and 12.2% for urban.