WORLD HEALTH ORGANIZATION. Major milestone reached in global polio eradication: Western Pacific Region is certified polio-free: WHO Press Release WHO/71 (29 October 2000). Communicable Diseases Intelligence, [S. l.], v. 24, p. 304, 2000. Disponível em: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2606. Acesso em: 2 apr. 2026.