Problems in the use of vaccines.
D006801:Humans; D007114:Immunization / Q000639:trends; D007223:Infant; D009313:National Health Programs; D011640:Public Policy; D011786:Quality Control; D006113:United Kingdom; D014611:Vaccination / Q000009:adverse effects / Q000592:standards; D014612:Vaccines / Q000592:standards
D014612:Vaccines