This study was aimed to demonstrate the incidence of  Hashimoto's disease in Iraqi patients and its correlation to some of the sociodemographic features. The research groups involved (50 patients with Hashimoto?s disease and 50 healthy subjects). All of them were subjected to the estimation of levels of free triiodothyronine (FT3), free thyroxine (FT4), TSH, anti-thyroid peroxidase (anti-TPO), and anti-thyroglobulin (anti-Tg). The results demonstrated that there is a dramatic increase in the occurrence of HT in older patients. The age group (41-50 years old) was the most age group affected by Hashimoto's disease, followed by the age groups (31-40, 21-30, and 9-20 years old) respectively. A significant proportional correlation (R:0.952, P:0.024) was found between HT disease and aging. According to the gender, the results found that the vast majority (82%) of patients were females (P = 0.01). Also, the smoking percent was (40%) of patients. The presence of autoimmune thyroid disease in one or more individuals within the family (family history) was also evaluated and the results found that (28%) of the Hashimoto?s disease group have a positive family history of thyroid autoimmune diseases. It can be concluded from these results that females are more prone to developing Hashimoto?s disease compared to males, in other words, the female gender is a risk factor for the occurrence of autoimmune hypothyroidism. Also, the negative impact of smoking and family history gives an indication that these parameters are independent and don’t associate with Hashimoto?s disease at least in the current study.

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The study involved 219 meningitis patients registered at AL-Hussein Teaching Hospital over a two-year period to determine the prevalence of Neisseria meningitidis in AL-Nasiriya city and the impact of sociodemographic parameters on infection (from the beginning of 2015 to the end of 2016). A technician extracted cerebrospinal fluid samples from the research population, and then transferred them directly to the laboratory for the identification of bacterial pathogens. The findings revealed that 57 patients (26.02%) were afflicted with Neisseria meningitidis. Twenty-nine cases (50.87%) were in 2015 and 28 cases (49.13%) were in 2016. Our studies showed that the incidence of Neisseria meningitidis was slightly higher in males than in females and in the age group of 20-44 years old. Over the study period, seasonal variation was also shown. This study concluded that meningococcal meningitis infection was affected by sociodemographic influences, which appeared to be prevalent in the long warm seasons of Iraqi weather, with summer having the highest percentage of N. meningitidis infections, followed by fall.

Helicobacter pylori are Gram-negative curved rods that habitats the gastric mucosa and considered as the leading causes of stomach ulcers and duodenal ulcers in humans. The main object of this study was to evaluate the influences of the bacteria on several hematological parameters. A total of 60 patients aged between 15 to 40 years were included in this study (30 male and 30 female) in addition to 30 healthy individuals from the same ages who were considered as a control group. Venous blood (4 ml) was obtained from the study population and investigated for complete blood count (CBC) using an automated hematology analyzer. The results revealed that there is a substantial decrease (p 0.01) in Hemoglobin (Hb), Red cell distribution width (RDW), and mean corpuscular hemoglobin (MCH) in patients compared to control. However, no significant difference in Red blood cells (RBCs), Hematocrit (HCT), mean corpuscular volume (MCV) and mean corpuscular hemoglobin concentration (MCHC) in patients compared to control. Also, no significant differences were found in the white blood cell (WBC) between H. pylori infected and non-infected persons. Otherwise, there are significant differences (p 0.01) in lymphocytes, monocytes, granulocytes in the patients and healthy individuals. The results also found that there are significant statistical differences in some of the hematologic parameters among study groups according to their gender. The study concluded that Hb, RDW, lymphocytes, monocytes, granulocytes are decreased in H. Pylori infected patients suggesting that infection may have direct effects on blood parameters.

In order to investigate the incidence of Neisseria meningitides meningitis in AL Nasiriya city, and to evaluate the effects of sociodemographic factors on infection, the current study involved (219) patients suffering from meningitis who attended in AL-Hussein Teaching Hospital in for two consecutive years (beginning of 2015 to the end of 2016). CSF samples are collected from the study population by the technician then transported immediately to the laboratory for the detection of the bacterial pathogens. The results showed that there are 57 (26.02%) patients infected with Neisseria meningitides. Of them 29 (50.87%) cases occurred during 2015 and (28) cases (49.13%) occurred during 2016. Our results also found that Neisseria meningitides meningitis infection was significantly higher in men than in females (P-value =0.046), and in patients from the age group (44-66 years old). Seasonal variation was also seen in the occurrence of meningococcal meningitis infections during the study period. The present study concluded that meningococcal meningitis infections were influenced by sociodemographic factors, the infections appear to be dominant in the long warm seasons of Iraqi weather.