@misc{indiciae0c34fc198ad3,
  title = {Nature abhors vacuum, but public health is loving it: the sustained decrease in the rate of invasive Haemophilus influenzae disease.},
  author = {Jay C Butler},
  year = {2005},
  doi = {10.1086/428064},
  url = {https://pubmed.ncbi.nlm.nih.gov/15736016/},
  note = {Source identifier: 15736016}
}