Background: While recognizing the etiology of community-acquired pneumonia is necessary for formulating local antimicrobial guidelines, limited data is published about this etiology in Egyptian pediatric patients. The aim of this study is to elucidate the common bacterial pathogens causing CAP among immunocomptent infants and preschool children admitted to Zagazig university Pediatric hospital. Methods: 48 infant and preschool children admitted to pediatric hospital of Zagazig university and presented with signs of pneumonia according to WHO. Etiological agents were identified using conventional bacteriological identification methods and Ig M antibodies detection against common a typical bacteria and respiratory viruses. Results: Staph. Aureus 35.4% is the most common pathogen detected in sputum regardless the age group .In blood culture results negative results in most cases of pneumonia 62.5%. Staph. Aureus is the most common pathogen detected in blood culture in positive cases regardless the age group 18.7% , E Coli 6.25%, Klebsiella 2.08.In Serology results significant difference according to age in viral pneumonia occurrence and non significant difference in bacterial pneumonia based on serological findings with higher diagnosis of Legionella pneumophila 33.33% as a causative organism. Conclusion: This study provides preliminary data regarding the spectrum and frequency of microorganisms causing CAP in infants and preschool children.

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Background: Idiopathic (immune) thrombocytopenic purpura (ITP) is a heterogeneous clinical disorder characterized by immune-mediated platelet destruction. ITP is usually a benign, self-limiting disease in children. Objective: To assess prevalence, prognosis, and outcome of Egyptian children with primary immune thrombocytopenia. Patients and Methods: This cross-sectional study was carried on 80 children (1-13 years) with primary ITP who presented to the Pediatric Hematology Unit and outpatient clinic of Zagazig University Hospitals, during the period from April 2020 to June 2021. Patients were divided into two groups; Group (1): included 20 healthy matched subjects (control), Group (2): included 60 patients with primary ITP. The group was subdivided into 3 subgroups, Subgroup (2A) included 20 patients with newly diagnosed ITP, Subgroup (2B) included 20 patients with persistent ITP, and Subgroup (2C) included 20 patients with chronic ITP. Results: There were significant differences between the studied groups in age, sex, and weight. There was a statistically significant association between prognosis and general characteristics of the studied ITP patients. Conclusion: primary ITP in children is a nonthreatening and self-limited disease, usually lasting less than one year, and chronic form has different prognostic parameters. The use of these parameters can early distinguish children who are expected to have short and uneventful disease duration, to minimize their exposure to pharmaceutical intervention.

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