Florida Cerebrovascular Disease Biorepository and Genomics Center

Inclusion Criteria: • Affected subjects with diverse cerebrovascular conditions, including, but not limited to, ischemic stroke, transient ischemic attack (TIA), intracerebral hemorrhage (ICH), aneurysmal subarachnoid hemorrhage (aSAH), vascular dementia (VAD), anoxic brain injury, unruptured intracranial aneurysm (UIA), cavernous malformation, arteriovenous malformations (AVM), carotid and vertebral arterial dissections, symptomatic and asymptomatic cervical carotid artery atherosclerotic stenosis, non-aneurysmal perimesencephalic subarachnoid hemorrhage (naSAH), cerebral venous thrombosis (CVT), moyamoya disease, fibrosmuscular dysplasia (FMD), non-traumatic, angiography-negative subarachnoid hemorrhage, leukoaraiosis, arteriovenous fistula, reversible cerebral vasoconstriction syndrome (RCVS), and CADASIL. Exclusion Criteria: • All patients with the following known or suspected virulent microorganisms causing an active or latent infection will be excluded from the study: * Human immunodeficiency virus (HIV); * Any viral hepatitis; * West Nile virus (WNV); * Influenza virus; * Tuberculosis (TB); * Any bacteremia; * Any fungemia; * Any prionopathy.