Expanded programme on immunization. Status of poliomyelitis eradication in the WHO European Region.
D005060:Europe / Q000453:epidemiology; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration*; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D014586:USSR / Q000453:epidemiology