Intestinal Parasites Research Articles

Parasitic Contamination of Raw Vegetables Consumed in Benghazi City-Libya

Twelve different types of fresh vegetables were randomly selected from the wholesale and retail markets in Benghazi city and examined for the presence of parasites using standard parasitological techniques. Out of 5712 vegetable samples examined 1416 (24.8%) were found contaminated with one or more parasitic stages (trophozoite-cyst-oocystegg-larva). The parasites detected include Entamoeba histolytica/E. dispar (67.6%), Entamoeba coli (4.9%), coccidia oocysts (9.9%), Toxocara (50%), Ascaris lumbricoides (9.4%), Taenia/Echinococcus (18.6%) and Hymenolepis nana (13%). The incidence of the parasites was found to be 37.2% on rockets, 35.5% on coriander, 30.7% on parsley, 29% on Swiss chard, 28.8% on the green onion, 28% on carrots, 22.9% on radish and dill, 19.5% on lettuce, 18.3% on cucumber, 14.1% on tomato and 12.4% on cabbage. The result of this study stressed the importance of raw vegetables consumed in Benghazi in the transmission of intestinal parasites and it is important to implement hygienic principles from production to consumption of these vegetables.

Anthelmintic activity of three selected ethnobotanical plant extracts against Strongyloides venezuelensis

The agropastoral farmers have employed Turraea vogelii(TVL),Senna podocarpa(SPL), and Jaundea pinnata (JPL) leaves for treating various diseases, including intestinal parasites in livestock and the human population in Nigeria. Gastrointestinal nematodes are highly significant to livestock production and people's health, and natural products are interesting as sources of new drugs. In this study, we evaluated the effectiveness of extracts derived from these plants in treating parasitic infections using third-stage infective larvae (L3) of Strongyloides venezuelensis. We obtained crude extracts using n-gexane (Hex), ethyl acetate (Ea), and methanol (Met). The extracts were analyzed for their phytochemical composition, and their ability to prevent hemolysis were tested. The mean concentrations of total phenols in SPL Hex, SPL Ea, and SPL Met were 92.3 ± 0.3, 103.0 ± 0.4, and 128.2 ± 0.5 mg/100 g, respectively. Total tannin concentrations for JPL Ea, SPL Ea, SPL Hex, and TVL Hex were 60.3 ± 0.1, 89.2 ± 0.2, 80.0 ± 0.1, and 66.6 ± 0.3 mg/100 g, respectively. The mean lethal concentration (LC50) at 72 h for JPL Ea 39 (26–61) μg/mL. SPL Ea was 39 (34–45) μg/mL, and TVL Hex 31 (26–36) μg/mL. The antiparasitic activities of the extracts against L3 were dose- and time-dependent. All the extracts were slightly hemolytic to the erythrocytes. In this study, the plant extract tested demonstrated significant anti-S. venezuelensis activity. These phytobotanical extracts could be used to create formulations for the potential treatment of helminthiasis in animals and humans.

Avirulent UG10 Entamoeba histolytica mutant derived from HM-1:IMSS strain shows limited genome variability and aberrant 5-methyl cytosine genomic distribution

Entamoeba histolytica, an intestinal parasite of global significance, poses substantial health risks with its associated high morbidity and mortality rates. Despite the current repertoire of molecular tools for the study of gene function in, the regulatory mechanisms governing its pathogenicity remain largely unexplored. This knowledge gap underscores the need to elucidate key genetic determinants orchestrating cellular functions critical to its virulence. Previously, our group generated an avirulent strain, termed UG10, with the same genetic background as the HM1:IMSS strain. UG10 strain, despite showing normal expression levels of well-known virulence factors, was unable to perform in-vitro and in-vivo activities related to amoebic virulence. In this study, we aimed to uncover the genome-wide modifications that rendered the avirulent phenotype of the UG10 strain through whole-genome sequencing. As a complementary approach, we conducted Methylated DNA Immunoprecipitation coupled with sequencing (MeDIP-seq) analysis on both the highly virulent HM1:IMSS strain and the low-virulence UG10 strain to uncover the genome-wide methylation profile. These dual methodologies revealed two aspects of the UG10 avirulent strain. One is the random integration of fragments from the ribosomal gene cluster and tRNA genes, ranging from 120 to 400 bp; and secondly, a clear, enriched methylation profile in the coding and non-coding strand relative to the start codon sequence in genes encoding small GTPases, which is associated with the previously described avirulent phenotype. This study provides the foundation to explore other genetic and epigenetic regulatory circuitries in E. histolytica and novel targets to understand the pathogenic mechanism of this parasite.

Clinical and Diagnostic Findings in Dogs Infected with Trichuris vulpis: A Retrospective Study.

Trichuris vulpis is a parasite of the large intestine of canids and has a global distribution. Despite its well-established epidemiology, the question of its pathogenicity in dogs remains debated. It has been suggested that younger age and concurrent infection with Ancylostoma caninum may be responsible for more severe clinical presentations. This retrospective study aimed to describe the clinical and diagnostic features of T. vulpis-infected dogs and to compare these findings with dogs infected with both T. vulpis and other intestinal parasites (poly-infected dogs). Forty-five dogs were included, with twenty-five being solely infected by T. vulpis and twenty poly-infected dogs. Only weight loss was more frequent (p = 0.006) in poly-infected dogs compared to T. vulpis mono-infected dogs. No significant differences were observed in laboratory abnormalities between mono-infected and poly-infected dogs. Only diarrhea was more frequent (p = 0.007) in younger dogs compared to adults. The egg shedding pattern was significantly higher (p = 0.04) among adult dogs compared to young ones, and there was a significant positive correlation between egg shedding and age (r = 0.41; p = 0.005). These findings suggest that T. vulpis might be responsible for both clinical signs and laboratory abnormalities in dogs, irrespective of the host's age and the presence of other intestinal parasites.

Prevalence and associated factors of infection in children with nephrotic syndrome aged 2-18 years in the northwest and east Amhara region, Ethiopia: a multi-center cross-sectional retrospective study

BackgroundInfection is the most common complication of pediatric patients with nephrotic syndrome. The factors associated with infection in nephrotic syndrome are lacking. The objective of the study was to identify the prevalence and associated factors among children with nephrotic syndrome aged 2 to 18 years.MethodsWe conducted a hospital-based retrospective cross-sectional study. The data collector installed an Epi5 collector electronic data-collecting tool from Google Play. Then, we exported the data to Stata version 15.1 for analysis. The mean, standard deviation, frequency, and percentage were used for descriptive statistics. The logistic regression model was used to identify the factors associated with infection.ResultsIn this study, the prevalence of infection among nephrotic syndrome children is 39.8% (95%CI: 30.7, 49.7). The types of infection identified were pneumonia, urinary tract infection, diarrheal disease, cutaneous fungal infection, intestinal parasitic infection, and sepsis. The presence of hematuria increased the odds of infection by 5-times. On the other hand, low level of serum albumin increased the odds of infection by 7%. Being a rural resident increased the odds of infection by 3.3-times as compared to urban.ConclusionsSerum albumin level, presence of hematuria, and rural residence were significantly associated with infection. We recommended a longitudinal incidence study on large sample size at multicenter to strengthen this finding.

Molecular characterization and zoonotic potential of Entamoeba spp., Enterocytozoon bieneusi and Blastocystis from captive wild animals in northwest China

BackgroundParasites Entamoeba spp., Enterocytozoon bieneusi and Blastocystis are prevalent pathogens causing gastrointestinal illnesses in animals and humans. Consequently, researches on their occurrence, distribution and hosts are crucial for the well-being of both animals and humans. Due to the confined spaces and frequent interaction between animals and humans, animal sanctuaries have emerged as potential reservoirs for these parasites. In this study, the wildlife sanctuary near the Huang Gorge of the Qinling Mountains in northwest China is chosen as an ideal site for parasite distribution research, considering its expansive stocking area and high biodiversity.ResultsWe collected 191 fecal specimens from 37 distinct wildlife species and extracted genomic DNA. We identified these three parasites by amplifying specific gene regions and analyzed their characteristics and evolutionary relationships. All the parasites exhibited a high overall infection rate, reaching 90.05%. Among them, seven Entamoeba species were identified, accounting for a prevalence of 54.97%, with the highest infection observed in Entamoeba bovis. In total, 11 Enterocytozoon bieneusi genotypes were discovered, representing a prevalence of 35.08%, including three genotypes of human-pathogenic Group 1 and two novel genotypes (SXWZ and SXLG). Additionally, 13 Blastocystis subtypes were detected, showing a prevalence of 74.87% and encompassing eight zoonotic subtypes. All of the above suggests significant possibilities of parasite transmission between animals and humans.ConclusionsThis study investigated the occurrence and prevalence of three intestinal parasites, enhancing our understanding of their genetic diversity and host ranges in northwest China. Furthermore, the distribution of these parasites implies significant potential of zoonotic transmission, underscoring the imperative for ongoing surveillance and implementation of control measures. These efforts are essential to mitigate the risk of zoonotic disease outbreaks originating from wildlife sanctuary.

The impact of climate change upon intestinal parasites in central Europe during the 4th millennium BCE

The Neolithic period in Europe was subject to marked climatic variations during the fourth millennium BCE in the Alpine arc, marking the transition between the recent Atlantic and the Subboreal. This phase is characterized by falling temperatures and rising humidity in the Northern Hemisphere. Within this phase, between 3700 and 3250 BCE, a more intense phase takes place, known as Rootmoos 2 or Piora 2. This phase is characterized by a significant drop in lake water levels. This climatic change had repercussions on lakeside dwellers, notably through the modification and adaptation of their diet and subsistence modes. Intestinal parasites (helminths), found by human and animals via parasitic markers, seem to respond over time to these climatic variations. At first sight, low lake level phases are characterized by significant proportions of Trichuris at the expense of Diphyllobothrium, as well as an increase in Fasciola. These phases therefore seem to favour parasites indicative of agropastoral activities. During periods of high lake levels, Diphyllobothrium increase in number, pointing to a higher frequency of fishing practices. In sum, during periods of cooler/wetter climate, Neolithic lakeside populations seem to focus more on fishing produce, which may be a response to a destabilization of previously established agropastoral systems, marking a return to more opportunistic behaviour with the exploitation of products from the direct environment. This pilot study tends to evaluate if the evolution of parasitic communities in the 4th millennium BCE could therefore be used to complete our understanding of the effects of climatic variations on societies, both as a direct consequence of environmental destabilization (effect on the hosts) and the result of the behavioural adaptation of the inhabitants, even if it is still difficult to determine the importance of the influence of each factor on these variations. Despite some remaining challenges in the current study, the integration of paleoparasitic data into broader paleoenvironmental models appears promising. Future research can continue to develop along this path.

Prevalence of intestinal protozoan parasites among Asian schoolchildren: a systematic review and meta-analysis.

Intestinal protozoan parasites among Asian schoolchildren are a subject of concern due to their prevalence and potential health impact. Understanding and addressing this issue is crucial for public health in the region. We conducted a comprehensive search for articles published up to December 2023 across four databases, including Scopus, PubMed, ProQuest, and Web of Science. To estimate the combined prevalence, a random-effects model with a 95% confidence interval (CI) was applied, and the statistical analysis was performed using meta-analysis packages in R version (3.6.1). This study is registered with PROSPERO (CRD42023481146). Among 131 eligible articles, the prevalence of intestinal protozoan parasites was 0.208 (95% CI = 0.180-0.238). Lebanon and Tajikistan had the highest country-level prevalence at 0.851 and 0.836, respectively, with Giardia duodenalis being the most prevalent species at 0.082. In summary, our study highlights the urgent public health issue of protozoan parasites among Asian schoolchildren due to poor sanitation and water quality. Immediate interventions are essential, considering climate and socioeconomic factors, to combat these infections and improve overall health.

Associations of Plasmodium and Intestinal Helminth Infections with Maternal Anemia and Adverse Pregnancy Outcomes in Northwest Ethiopia.

Malaria and intestinal helminth infections are significant public health challenges in Ethiopia. However, little is known about the relationship of Plasmodium and intestinal helminth infections in pregnancy with maternal anemia and adverse pregnancy outcomes. A health-facility-based cross-sectional study was conducted among 526 parturients in northwest Ethiopia to investigate the associations of these parasitic infections with anemia and adverse pregnancy outcomes. Maternal and newborn profiles were collected using questionnaires and checklists. Maternal hematocrit was determined using the micro-hematocrit method. Malaria was diagnosed by microscopy, rapid diagnostic tests, and quantitative polymerase chain reaction, whereas intestinal parasites were detected microscopically using stool wet mount and Kato-Katz preparations. Among the women, 38.6% were anemic, and 36.5% had adverse pregnancy outcomes. Single infections of hookworm (adjusted odds ratio [aOR] = 3.11, 95% CI: 1.64-5.87) in pregnancy were associated with anemia at parturiency, whereas malaria single infections were associated with anemia (aOR = 4.28, 95% CI: 2.17-8.23) and adverse pregnancy outcomes (aOR = 2.94, 95% CI: 1.47-5.91). Moreover, intestinal helminth coinfections in pregnancy were associated with anemia (aOR = 13.3, 95% CI: 4.8-36.8), whereas malaria-helminth coinfections were associated with anemia (aOR = 7.47, 95% CI: 3.71-15.04) and adverse pregnancies (aOR = 4.75, 95% CI: 2.36-9.57). Overall, the study showed that Plasmodium and intestinal helminth infections in pregnancy are associated with anemia and adverse pregnancy outcomes. Thus, strengthening malaria and intestinal parasite infection prevention and control practices in pregnancy is warranted to alleviate the burden of anemia and adverse pregnancy outcomes.

Prevalence of gastrointestinal parasites in domestic pigs from family farms in northeastern Argentina

Domestic pigs serve as significant hosts and reservoirs for multiple parasite species, some specific to pigs and many others of zoonotic importance. This study aimed to assess the prevalence of intestinal parasites in pigs within a rural area in northeastern Argentina. We also examined demographic information, breeding conditions, and exposure factors associated with parasite presence. Pig feces were subjected to coprological examination through flotation and sedimentation techniques. Modified Ziehl-Neelsen technique was employed to examine oocysts of Cryptosporidium spp. In total, 29 family farms with pig pens were analyzed, and 42 stool samples were collected from pigs on these farms. At the farm level, the presence of at least one parasite species was recorded in 27 rural houses (93.1%). We found that 90.4% of pigs were parasitized, with a specific parasitoses of 10 species, with a maximum of six species in a single host. The most prevalent protozoa were Entamoeba spp. (57.1%) and Blastocystis sp. (45.2%), followed by Iodamoeba butschlii (33.3%), Neobalantidium coli (21.4%), coccidia (14.2%), Cryptosporidium spp. (9.5%) and Giardia spp. (2.3%). The most prevalent helminths were Strongylidae eggs (52.3%), Ascaris spp. (14.2%) and Trichuris spp. (2.3%). We advocate for an urgent need to implement a comprehensive prophylaxis program prioritizing general hygiene practices such as regular cleaning, removal of fecal material and renewal of drinking water. Additionally, vaccination and deworming protocols should be implemented. Furthermore, this study highlights the necessity for molecular-level evaluations to detect potential zoonotic genotypes of the identified protozoa.

Urban house finches are more resistant to the effects of artificial light at night

Rapid urbanization of habitats alters the physical, chemical, auditory, and photic environments of human and wild animal inhabitants. One of the most widespread transformations is caused by artificial light at night (ALAN), but it is not clear the extent to which individuals acclimate to such rapid environmental change. Here, we tested the hypothesis that urban birds show increased resistance to harmful behavioral, parasitological, and physiological effects of ALAN. We captured house finches (Haemorhous mexicanus), a bird that commonly inhabits cities and their natural surroundings, from two urban and two rural sites in Phoenix, Arizona, USA, which differ by both degree of urbanization and by multiple orders of magnitude in ALAN intensity, and placed them in a common garden laboratory setting. We exposed half of the birds from each habitat type to ecologically relevant levels of night lighting during the subjective night and found that, while ALAN exposure reduced sleep in both urban and rural birds, ALAN-exposed urban birds were able to sleep longer than ALAN-exposed rural birds. We also found that ALAN exposure increased the proliferation rate of an intestinal coccidian parasite (Isospora spp.) in both urban and rural birds, but that the rate of proliferation was lower in urban relative to rural birds. We found that night lighting suppressed titers of feather corticosterone in rural but not urban birds, suggesting that light impairs HPA function through chronic stress or suppression of its circadian rhythmicity, and that urban birds were again resistant to this effect. Mediation analyses show that the effect of ALAN exposure in rural birds was significantly sleep-mediated for feather corticosterone but not coccidiosis, suggesting a diversity of mechanisms by which ALAN alters physiology. We contribute further evidence that animals from night-lit habitats can develop resistance to ALAN and its detrimental effects.

In vivo anthelmintic effect of Artemisia annua L. on oxyurid nematodes of laboratory mice

Oxyurids are common intestinal parasites of mammals, and they are the cause of recurrent helminthic infections, especially in children Hence natural herbal compounds are necessary for a repeatable cure. This study aimed to investigate the antinematodal effect of Artemisia annua L. n-hexane extract on oxyurids in vivo. In this study, A. annua L. n-hexane extract was applied to mice naturally infected with Syphacia obvelata and Aspiculuris tetraptera species orally at 300, 600, and 1200 mg/kg doses for seven days and the change occurring in the number of oxyurid eggs was investigated by the fecal flotation method. The nematodes in the necropsy were compared on the 8th day in all groups in terms of number, gender, and species. Albendazole (ABZ) was applied at a 5 mg/kg dose for three days as positive drug control, and corn oil was used as solvent control. The arithmetic mean of oxyurid eggs counted in fecal flotation 43.51% decrease in the drug control ABZ group and showed a 21.12% increase in the A. annua 1200 mg/kg group on the last day of application. When compared with the corn oil group, a 34.08%, 34.76% and 36.91% decrease in ABZ 5 mg/kg, A. annua 300 mg/kg and A. annua 1200 mg/kg group respectively were found in their necropsies in terms of nematode number. Non-polar compounds of A. annua L., very low concentration of ABZ and as a dilution solvent corn oil are probably responsible for this result.

Prevalence of Intestinal Parasitic Infections among Food Handlers from Greater Cairo, Egypt

Abstract Background Foodborne illnesses caused by intestinal parasitic infections (IPIs) are among the major health problems especially in developing countries. Food handlers play an important role in transmission of IPI during manufacturing, processing, handling, and serving of foodstuff. Objectives The aim of the present study was to determine the prevalence of IPIs among food handlers in Greater Cairo, Egypt and their associated risk factors. Methodology A cross sectional study was designed whereby 250 food handlers attending four provision health offices from different governorates of Greater Cairo were examined. The demographic data, job title and position, health certification as well as risk factors that might increase the transmission of IPIs were collected in a pre-designed questionnaire. Stool samples were collected from all participants and examined by direct wet/iodine mounts, formol diethyl acetate and modified Ziehl_Neelsen staining techniques. Results 65 food handlers (26%) were found to have IPIs. The commonest parasites detected were Entamoeba histolytica (24.6%), Entamoeba coli (20%), Blastocystis hominis (16.9%), Giardia intestinalis (12.3%), followed by Enterobius vermicularis (10.8 %), Ascaris lumbricoides (7.7 %) and Schistosoma mansoni (3.1%). Higher, statistically significant (P < 0.001), prevalence of IPIs was found among food handlers from rural areas, having low educational levels, not having previous health certificates and among those working in popular restaurants and those having poor personal hand hygienic measures. While no differences in prevalence of IPIs was found regarding age, sex, and work experience duration. Conclusion It was concluded that implementation of governmental policies ensuring routine medical checkup and continuous professional training and education of food handlers are essential for prevention of IPIs among food handlers.

The Bibliometric Analysis of the Postgraduate Theses Written on Medical Parasitology in Türkiye.

The aim of this study was to analyze the theses prepared in the field of medical parasitology in Türkiye and to reveal the importance given to the science of parasitology in the groves of academe and to raise awareness in this field. Council of Higher Education's National Thesis Center database has been analyzed postgraduate these documents conducted in the field of medical parasitology from January 1985 to September 2022. As a result of the examining, 393 theses made in the field of medical parasitology were detected. It was determined that 52.9% of the theses prepared were master, 28% of PhD and 19.1% were the thesis of medical specialty thesis and 61.3% of the theses prepared were related to protozoa, 16.5% of helminths, 8.6% arthropods and 12.2% of intestinal parasites (helminth and protozoa). The top five types of parasites in the theses were Toxoplasma gondii, Leishmania spp., Echinococcus spp., Giardia intestinalis and Cryptosporidium spp. respectively. In conclusion, it was of the opinion that more importance should be given to the field of medical parasitology in Türkiye.

Prevalence of intestinal parasitic infections among the pregnant women in South and South East Asian countries: A systematic review and meta-analysis.

Intestinal parasitic infections (IPIs) are a major health concern in resource-limited countries of South/South-East Asian region. Despite posing a potential threat to maternal and fetal health, there is limited data available on the actual burden of IPI among pregnant women. Through this systemic review and meta-analysis, we sought to determine the pooled prevalence of IPI and species-specific prevalence among pregnant women in this region. Subgroup analysis was done by region, stool examination technique, and study settings. Among 220 retrieved studies, 21 studies from 8 countries across the region were found eligible and included in this study. The estimated overall pooled prevalence of IPIs among pregnant women was 43.15% (95% confidence interval: 30.66-56.10). The most prevalent IPI was Ascaris lumbricoides (25.14%) and predominant protozoa was Entamoeba histolytica/dispar (6.96%). In subgroup analysis, the estimated pooled prevalence of IPIs in Nepal, India, Thailand, and Thai-Burmese Border was 40.88%, 28.33%, 55.38%, and 23.78%, respectively. Studies using Kato-Katz technique for stool examination showed the highest estimated pooled IPI prevalence (62.70%). The prevalence of IPI was found to be lower in facility-based studies (38.12%) than that of studies done in the community (66.21%). Considering the high burden of IPI in pregnant women as estimated in our review and the already established impact of IPI infection on maternal health and fetal outcomes, we recommend implementation of the preventive chemotherapy during routine antenatal checkups.

Intestinal parasitic infections and associated risk factors: A cross-sectional study in Sunggal District, Deli Serdang

Intestinal protozoan infections have been reported worldwide with highly variable prevalence rates, particularly in tropical and subtropical regions. Despite this, limited research has been conducted on intestinal protozoan infections over the past decade, both in Indonesia and specifically in North Sumatra. Therefore, further investigation into the prevalence and risk factors of intestinal parasitic infections, especially protozoan infections, in areas surrounding Medan is warranted. This cross-sectional study assessed the association between risk factors and intestinal parasitic infections among 136 residents of Sunggal District, Deli Serdang, selected using consecutive sampling. Participants underwent interviews to evaluate risk factors using a checklist and provided fecal samples, as well as livestock samples if applicable. Data were analyzed using the Chi-square test and Fisher's exact test. Results revealed a significant association between age and Protozoa infection (p = 0.001), helminth infection (p = 0.0002), and overall parasitic infection (p = 0.0001). However, no significant associations were found for other variables. Furthermore, sanitation and hygiene levels were not significantly associated with parasitic infections (p > 0.05). These findings suggest that the risk factors assessed in this study were not significantly associated with intestinal protozoan infections. Nonetheless, the prevalence of both overall parasitic infections and protozoan infections remains high, with a spectrum ranging from asymptomatic to symptomatic cases. Further research is needed to elucidate the complex interplay of factors contributing to the persistence of these infections in the region.

Sickle Cell Disease and Gut Health: The Influence of Intestinal Parasites and the Microbiome on Angolan Children.

Parasitic infections are a common problem in developing countries and can intensify morbidity in patients with sickle cell disease (SCD), increasing the severity of anemia and the need for transfusions. It has been demonstrated that both helminths and protozoa can affect gut microbiome composition. On the other hand, the presence of specific bacterial communities can also influence parasite establishment. Considering this, our aim was to associate the presence of intestinal parasites with the results of hematological analyses and microbiome composition evaluations in a population of Angolan children with and without SCD. A total of 113 stool samples were collected, and gut microbiome analysis was performed using 16S sequencing and real-time PCR to detect eight different intestinal parasites. In our population, more than half of children (55%) had at least one parasitic infection, and of these, 43% were co-infected. Giardia intestinalis and Ascaris lumbricoides were more frequently found in children from the rural area of Bengo. Moreover, SCD children with ascariasis exhibited higher values of leukocytes and neutrophils, whereas the total hemoglobin levels were lower. In regards to the gut microbiome, the presence of intestinal parasites lowered the prevalence of some beneficial bacteria, namely: Lactobacillus, Bifidobacterium, Cuneatibacter, Bacteroides uniformis, Roseburia, and Shuttleworthia. This study presents the prevalence of several intestinal parasites in a high-risk transmission area with scarce information and opens new perspectives for understanding the interaction between parasites, the microbiome, and SCD.

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.

49. Intestinal parasitism in free-range poultry, an undervalued problem

49. Intestinal parasitism in free-range poultry, an undervalued problem

An Assessment of the Epidemiology and In vitro Susceptibility of Giardia lamblia Trophozoites and Cysts to a Variety of Plant Extracts

Giardia lamblia is a prevalent intestinal parasite that cause diarrhea among human beings and the life cycle is complicated and contains two stages for trophozoites and cysts. These stages are hardly eradicated by using prescribed drugs such as metronidazole. Aim: The purpose of this study was to identify the intestinal parasite Giardia lamblia in patients suffering from diarrhea and primary enteritis, then determine the antiparasitic activity of five plant extracts included (Zumeria majda, Thymus migricus, Artemisia santolina, Sargassum and Proskia) compared with available drug of metronidazole (MTZ) as an effective and first-time treatment against Giardia lamblia. Place and Duration of Study: It was performed between January 2023 to February 2024 at the laboratory of parasitology of three hospitals included Ramadi Teaching Hospital, Fallujah Teaching Hospital and Ramadi Teaching Hospital for Maternity and Children in Al-Anbar governorate of Iraq. A total of 1200 stool samples of patients were collected from both genders and ranged in age from 6 months to 65 years. Methodology: The stool samples were examined directly by formalin-ether test using a light microscope to confirm the presence of G. lamblia infection. Test tubes contained 1 mL of every extract at concentrations of 10, 25, 50, 75 and 100 µg/mL before 10,000 cysts or trophozoites were added and then the tubes were incubated at 37°C for a period of 30, 120, and 360 minutes. A light microscope set to 400x magnification, smears made from residual cyst and trophozoite material were arranged individually on glass slides. The mean number of the extracted cysts and trophozoites were assessed using vital 0.1% eosin staining. Results: G. lamblia parasite infections accounted for 47.8% of all infections; males had a greater prevalence of the parasite (49.6%) than females (45.7%). In relation to other age groups, the incidences of G. lamblia infection were higher in the age groups of 6 months to 10 years and (11-20) years, at 55.17% and 47.6%, respectively. At the lowest concentrations of 75μg/mL and 100μg/mL following exposure times of 240 min and 360 min, all five plant extracts examined in this study included Zumeria majda, Thymus migricus, Artemisia santolina, Sargassum and Proskia had a significant effect and killed 100.0% of the cysts and trophozoites of G. lamblia in contrast to the MTZ, which showed the highest reduction rates 68.4% against cysts and 75.4% against trophozoites. Conclusion: To conclude, the study findings indicate that G. lamblia infections are more common in AL-Anbar province particularly in younger people. This can be attributed to a number of factors such as improper eating and drinking habits and an absence of respect for hygiene and public health standards. Plant-based extracts showed promising in vitro activity at low doses and short times of exposure, according to the results on G. lamblia. These findings could lead to the development of a novel therapeutic alternative to treat Giardiasis infections.