Background: Intestinal parasitic infections including amoebiasis, blastocystosis, giardiasis, are all worldwide distribution with harmful effects, it is an important cause of morbidity and death rate in the poor countries. Objective: This study was done to collect information of the frequency of these diseases in some regions of Baghdad. Our objectives are to detect the frequency of human pathogenic parasites in some regions of Baghdad in stool samples of patients who would attend to AL-Kindy Teaching Hospital, Medical City Teaching Hospital and to determine the most common age group affected. Materials and Methods: Data were collected from Al-Kindy Teaching Hospital and Medical City Teaching Hospital, in the lab of parasitology from June 2021 to February 2022. The present study included (200) sample, which were collected from patients at different ages of both genders, samples of the study were selected randomly. Results: The results of epidemiological study showed that the total number infected with Entamoeba histolytica parasite was (129) positive samples with total percentage of (64.5%) in both of Al-Kindy Teaching Hospital and Medical City Teaching Hospital, Percentage of infective cases with this parasite in the two hospitals, were (93%, and 36%) respectively, followed by Blastocystis hominis with total number of (59) positive samples and a percentage of (29.5%). The percentage of infective cases with this parasite in the two hospitals, were (5%, and 54%) respectively, and then Giardia lamblia with total number of (12) positive samples, and a percentage of (6%). The percentage of infective cases with this parasite in the two hospitals, were (2%, and 10%) respectively. Males showed higher number and percentage of infection with E. histolytica, (85) case with percentage of (42.5%), while females were (44) case with percentage of (22%), while number and percentage of infection with B. hominis in males were (34) case with percentage of (17%), and females were (25) case with percentage of (12.5%), finally number and percentage of infection with G. lamblia in males (6) cases with percentage of (3%), equal females were (6) case with percentage of (3%). Infection highest percentage happened among age group (20-29) years with percentage of (28%), while the lowest percentage of infection occurred among age group (1-9) years, with percentage (1%), were detected in Medical City Teaching Hospital. In conclusions: Entamoeba histolytica was the most frequent parasite in our study, followed by Blastocystis hominis, while Giardia lambilia was the least frequent one. Also males were more affected than females to parasitic infections, and the most common age group affected was (20-29) years.Health education, safety of food and water must get higher to increase the knowledge of community about diseases caused by intestinal parasites.Using permanent stains, culture, molecular methods, and serological methods for detection of parasites, also making more studies including increasing in number of samples.

Ten well water samples were analyzed for the development of bacterial load using 1%, 5% and 10% concentrations of alum which was added to each 100ml of well water samples to determine the effect of alum on the microbial load of well water from Rural and Urban Areas in Enugu State. After exerting an effect on the well water sample, the supernatants and sediments were analyzed for development of bacteria colonies by viable cell counts. It was observed that the effect of alum on bacterial load increases as the percentage concentration of the of alum increases, however, further increase in the concentration of alum has no effect on the bacterial load, and this can be observed in well water from Ufuma Achara layout, Agbani Nkanu, Ugbo Paul Abakpa, Ohofia Uwani and Amodu Awkunanaw. On the other hand, from1% to 5% concentration of alum has no effect on the supernatant of well water from Amaokwe Achara layout, but however, with increase in concentration of about 10% it began to exert an effect on the bacterial load of both the supernatants and sediments.

Background: Due to their extensive use in medical therapy, iron oxide nanoparticles have recently attracted the attention of researchers in the field of increasing multi-resistance properties in bacterial pathogens. Because iron oxide nanoparticles have a high specific surface area, they can interact with bacterial surface structures and exhibit significant antibacterial activity. Objective: The current work, determined the effect of a novel anti-virulence factor agent which was created from iron oxide nanoparticles against selected gram-positive and gram-negative variant bacterial strains that were isolated and identified from elderly Iraqi patients with urinary tract infections. Methods: Seven bacterial strains (three gram-positive and four gram-negative) were tested for their (biofilm, adhesion, and hemolysis) activity using the quantitative test-tube method, glass-slide method, and by determining the hemolysis ability of bacterial isolates against previously prepared RBC, respectively. The highest virulence factors formation bacterial isolates were chosen to determine the effect of Iron-oxide nanoparticles. Previously prepared and characterized Iron- oxide nanoparticles were used as anti- (biofilm, adhesion, and hemolysis) by using specific Bacterial-Fe3O4 NPs complex with different concentrations. The Results: All these bacteria expressed their virulence factors, the highest-level biofilm formation abilities were detected in Proteus mirabilis and Staphylococcus aureus, and the highest-level adhesion activity was observed in Enterococcus faecalis and Pseudomonas aeruginosa while the highest-level hemolysis activities on human RBC were determined in Micrococcus luteus and E. coli. The effects of (Fe3O4) nanoparticles against the highest virulence factors bacterial isolates shows an increases in the biofilm formation abilities of S. aureus and P. mirabilis as well as for standard bacterial strains the anti-biofilm formation ability of (Fe3 O4) NPs against gram-positive S. aureus, Proteus mirabilis, and standard gram-negative bacteria demonstrated an in-decrease biofilm formation ability of these bacteria effective at (5000 and 10000 µg/ml). The anti-adhesion ability of (Fe3 O4) NPs against gram-positive Enterococcus faecalis, and gram-negative Pseudomonas aeruginosa determined no effect on the adhesion abilities of gram-positive and negative bacteria atall concentrations (250, 400, 500, 750 and 1000µg/ml) Finally, the effect of different concentrations of iron oxide nanoparticles on the hemolysis ability of Micrococcus luteus and Escherichia coli on RBC was determined, the highest hemolysis inhibition level was estimated in 1000 µg/ml and the less inhibition in 500 µg/ml as compared with control.