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). Commun Dis Intell (2018) [Internet]. 2000 Oct. 31 [cited 2026 Apr. 16];24:304. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2606