title: A better system for polio vaccination in developing countries?
mesh_terms: D003906:Developing Countries; D004356:Drug Storage; D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D011054:Poliovirus Vaccine, Inactivated / Q000276:immunology*
chemical_list: D011054:Poliovirus Vaccine, Inactivated