Abstract
Background: Stroke is considered as one of the most concerns in health services facilities worldwide, and occurs in two types, ischemic stroke and hemorrhagic stroke. However, almost the three quarters of stroke cases are ischemic stroke which occur in effect of several risk factors such as hypertension, obesity, atherosclerosis, diabetes mellitus, arteritis, and inflammatory response. In recent years, infectious diseases are considered as one of the most important risk factors of ischemic stroke. In this regard, some bacteria causing the chronic infections in particular Chlamydia pneumonia, Helicobacter pylori, Mycoplasma pneumonia, and Mycobacterium tuberculosis get more attended. Methods: In the present meta-analysis, we studied 50 case-control studies and evaluated potential relevance of these infections with creation and development of ischemic stroke. Results: We surveyed the information of 33,978 participants in several nested case-control studies and demonstrated that bacterial infections can increase the risk of ischemic stroke.Conclusions: In this meta-analysis we demonstrated a meaningful relationship between infection by three bacteria C. pneumoniae, H. pylori, and M. tuberculosis with occurrence of ischemic stroke.