EPO and viral encephalitis: More than 80% of respondents said they did not use erythropoietin (EPO) in patients with acute brain injury (Additional file 2: Table S1); among those who would give such therapy, EPO was used more in TBI (n = 83) and SAH (n = 62) than in other diseases (HIE, n = 46; ischemic stroke, n = 39; after neurosurgery, n = 25; ICH, n = 21; CNS infection or encephalitis, n = 18 each; seizure and/or SE, n = 10).