• José Elías García-Sánchez, Enrique García-Sánchez, Enrique García-Merino, and María José Fresnadillo-Martínez.
• Departamento de Medicina Preventiva, Salud Pública y Microbiología Médica, Facultad de Medicina, Universidad de Salamanca, Salamanca, España. Electronic address: joegas@usal.es.
• Enferm. Infecc. Microbiol. Clin. 2015 Dec 1; 33 (10): e69-78.

AbstractAlthough the WHO original target date for the global eradication of poliomyelitis was the year 2000 -thanks to vaccination and institutional, public and private, resources for that purpose-, in 2013 the disease remained endemic in three countries, Afghanistan, Pakistan and Nigeria, and some cases were described in five others. The circulation of wild type 1 poliovirus in Israel, Gaza and the West Bank and the cases in Syria were a wakeup call, as at that time there were polioviruses derived from the oral vaccine that are still circulating among the human population and can cause the development of the disease. Travelling "from" and "to" endemic areas are factors to consider in poliovirus exportation and in its spread when it reaches areas with poor immunogenicity. Wars, terrorism, intolerance, lack of culture and proliferation of anti-vaccine groups and the rise of the anti-vaccination movement are important factors in the maintenance and expansion of the virus and in the "non-vaccination" against it. Based on the international situation to date, the Emergency Committee of WHO met in May 2014 to address the problem. It is still necessary to enhance the knowledge of the disease and its agent. In the first case to perform a differential diagnosis of flaccid paralysis and to continue vaccination programs, and in the second case to keep studying and looking for the poliovirus in environmental samples, which is a model for the study of many other viruses.Copyright © 2014 Elsevier España, S.L.U. y Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica. All rights reserved.

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