Current concepts in immunization.
D001428:Bacterial Vaccines; D006801:Humans; D007114:Immunization; D008457:Measles / Q000276:immunology; D011051:Poliomyelitis / Q000276:immunology; D012899:Smallpox / Q000276:immunology; D014765:Viral Vaccines
D001428:Bacterial Vaccines; D014765:Viral Vaccines