Fears that Afghan exodus threatens polio eradication.
Ahmad
K
K
D000346:Afghanistan; D000533:Altruism; D002675:Child, Preschool; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration*; D007223:Infant; D010154:Pakistan; D011051:Poliomyelitis / Q000276:immunology / Q000517:prevention & control*; D012036:Refugees