To cite package ‘hhdynamics’ in publications use:

  Tsang T, Cauchemez S, Perera R, Freeman G, Fang V, Ip D, Leung G,
  Peiris J, Cowling B (2014). “Association between antibody titers and
  protection against influenza virus infection within households.”
  _Journal of Infectious Diseases_, *210*(5), 684-692.
  doi:10.1093/infdis/jiu186 <https://doi.org/10.1093/infdis/jiu186>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Association between antibody titers and protection against influenza virus infection within households},
    author = {Tim K Tsang and Simon Cauchemez and Ranawaka APM Perera and Gertrude Freeman and Vicky J Fang and Dennis KM Ip and Gabriel M Leung and J S Malik Peiris and Benjamin J Cowling},
    journal = {Journal of Infectious Diseases},
    year = {2014},
    volume = {210},
    number = {5},
    pages = {684--692},
    doi = {10.1093/infdis/jiu186},
  }