Status of the neuromyelitis optica spectrum disorder in Latin America. ELSEVIER. Multiple Sclerosis and Related Disorders. Available online 15June2021. 2211-0348/© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/. Elsevier B.V. All rights reserved.