World Health Organization2022-05-202022-05-202022-05-209789240047310 (electronic version)9789240047327 (print version)https://iris.who.int/handle/10665/354479v, 82 p.The Portuguese version is published by PAHO: https://iris.paho.org/handle/10665.2/56329The Spanish versión is published by PAHO: https://iris.paho.org/handle/10665.2/58178enCC BY-NC-SA 3.0 IGOhttps://creativecommons.org/licenses/by-nc-sa/3.0/igoPoliovirusPoliomyelitisDisease EradicationPublicationsWorld Health Organization