title: Nature abhors vacuum, but public health is loving it: the sustained decrease in the rate of invasive Haemophilus influenzae disease.
authors.forename: Jay C
authors.initials: JC
authors.lastname: Butler
mesh_terms: D002648:Child; D002675:Child, Preschool; D006192:Haemophilus Infections / Q000517:prevention & control*; D018073:Haemophilus Vaccines / Q000276:immunology; D006801:Humans; D007223:Infant; D011634:Public Health; D018074:Vaccines, Conjugate / Q000276:immunology
chemical_list: D018073:Haemophilus Vaccines; D018074:Vaccines, Conjugate