title: Refugee Migration Crisis and the Threat of Re-Emergence of Polio in the European Union.
mesh_terms: D000346:Afghanistan / Q000453:epidemiology; D005062:European Union; D006801:Humans; D011051:Poliomyelitis / Q000453:epidemiology*; D012036:Refugees / Q000706:statistics & numerical data*; D013593:Syria / Q000453:epidemiology; D014171:Transients and Migrants / Q000706:statistics & numerical data*