title: New developments in immunizations: inadequate delivery of effective vaccines to target populations remains a challenge.
mesh_terms: D001428:Bacterial Vaccines / Q000008:administration & dosage*; D006801:Humans; D007114:Immunization; D014765:Viral Vaccines / Q000008:administration & dosage*
chemical_list: D001428:Bacterial Vaccines; D014765:Viral Vaccines