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BACKGROUND AND OBJECTIVE: Nosocomial infections are one of the major health problems. As the length of stay in the hospital increases, the risk of mortality and morbidity increases, which ultimately increases the cost of treatment. Therefore, the present study was performed as a systematic review and meta-analysis to evaluate the prevalence of nosocomial infections in Iran. METHODS: This systematic review and meta-analysis was performed in the range of the years 2001 – 2017. Articles related to the topic were assessed using Persian keywords “nosocomial infections”, “hospital”, and “Iran”, and their English equivalent in descriptive and cross sectional studies by searching online databases of SID & Magiran, PubMed and Scopus, ScienceDirect and Google Scholar. Analytical and interventional studies were excluded from the study list. FINDINGS: 578 articles had the preliminary inclusion criteria, and with the removal of 568 unrelated or low quality articles during secondary analyses, 10 articles were finally included in the process of meta-analysis. The overall prevalence of nosocomial infections in Iranian hospitals was 4.6% (CI-95%: 2.6 – 8.1). The highest prevalence of nosocomial infections was in Sanandaj with 15.6% (CI-95%: 10.22–82.1) and the lowest prevalence was in Urmia with 0.4% (CI-95%: 0.1–1.01). CONCLUSION: The results of the study showed that nosocomial infection has a low prevalence in Iran, but more attention and control over nosocomial infections in Iranian hospitals is necessary to reach standard levels.

BACKGROUND AND OBJECTIVE: Amblyopia is one of the common eye diseases in children and the risk of vision loss is possible. Therefore, the aim of this study is systematic review and meta-analysis in order to align the studies on the prevalence of amblyopia in Iranian children. METHODS: In this systematic review and meta-analysis relevant articles in scientific databases including SID, Science Direct and Medline (PubMed) and Google Scholar in March 1999- February 2017, using the Persian and English Keywords of Amblyopia, children, Iran. FINDINGS: In the review of internal and external journals and search on SID databases 22 articles, PubMed 126 articles, Science Direct 112 articles and 116 Google Scholar search engines were obtained. Then the articles that had the initial conditions for entry into the study were 162 cases based on preliminary studies, with the elimination of 214 repetitive articles. Finally, removing 120 articles unrelated to the topic of the study and removing 24 articles in the secondary studies ultimately 18 papers entered the meta-analysis process. The overall Prevalence of amblyopia in Iranian children was 5.4 % (Cl-95%: 3.1%-9.1%). CONCLUSION: According to the results of this study, the prevalence of amblyopia in Iranian children is high.