Polio, which is transmitted only between humans, is targeted by an extensive eradication campaign that has seen endemic polio restricted to only parts of three countries (Afghanistan, Nigeria, and Pakistan).
A polio, que se transmite só entre humanos, foi o obxectivo dunha extensa campaña de erradicación que viu restrinxida a polio endémica, quedando reducida a certas partes de catro países (India, Nixeria, Paquistán e Afganistán).