title: Failure of vaccination with Haemophilus influenzae vaccine.
mesh_terms: D001428:Bacterial Vaccines / Q000276:immunology*; D002675:Child, Preschool; D006192:Haemophilus Infections / Q000517:prevention & control*; D006193:Haemophilus influenzae / Q000276:immunology*; D006801:Humans; D014611:Vaccination
chemical_list: D001428:Bacterial Vaccines