title: A second dose of MMR vaccine for children in the United Kingdom.
mesh_terms: D002648:Child; D006801:Humans; D007115:Immunization Schedule; D007117:Immunization, Secondary; D008457:Measles / Q000517:prevention & control; D008458:Measles Vaccine / Q000008:administration & dosage* / Q000276:immunology; D022542:Measles-Mumps-Rubella Vaccine; D009107:Mumps / Q000517:prevention & control; D009108:Mumps Vaccine / Q000008:administration & dosage* / Q000276:immunology; D012409:Rubella / Q000517:prevention & control; D012411:Rubella Vaccine / Q000008:administration & dosage* / Q000276:immunology; D006113:United Kingdom; D017778:Vaccines, Combined / Q000008:administration & dosage / Q000276:immunology
chemical_list: D008458:Measles Vaccine; D022542:Measles-Mumps-Rubella Vaccine; D009108:Mumps Vaccine; D012411:Rubella Vaccine; D017778:Vaccines, Combined