[Several practical problems in infantile vaccination].
D002648:Child; D002675:Child, Preschool; D004165:Diphtheria / Q000276:immunology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008457:Measles / Q000276:immunology*; D011051:Poliomyelitis / Q000276:immunology*; D012899:Smallpox / Q000276:immunology*; D013742:Tetanus / Q000276:immunology*; D014611:Vaccination; D014917:Whooping Cough / Q000276:immunology*