From the Centers for Disease Control and Prevention. Global progress toward laboratory containment of wild polioviruses--July 2001-August 2002.
D006801:Humans; D007753:Laboratories / Q000592:standards / Q000706:statistics & numerical data*; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control; D017955:Poliovirus / Q000302:isolation & purification; D011786:Quality Control; D012042:Registries; D014773:Virology / Q000592:standards / Q000706:statistics & numerical data*; D014944:World Health Organization