To cite package ‘vaccineff’ in publications use:

  Quevedo D, Cucunubá Z (2024). _vaccineff: Estimate Vaccine
  Effectiveness Based on Different Study Designs_. R package version
  1.0.0, <https://CRAN.R-project.org/package=vaccineff>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {vaccineff: Estimate Vaccine Effectiveness Based on Different Study Designs},
    author = {David Santiago Quevedo and Zulma M. Cucunubá},
    year = {2024},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=vaccineff},
  }