Volume 27, Issue 1
  • ISSN 0142-5471
  • E-ISSN: 1569-979X



The case study describes the process of designing an interactive visualisation tool to help people understand the likelihood of Covid-19 transmission in different situations. This visualisation was created as part of a 13 month long collaborative project between scientific experts from a UK government advisory group, and a multimedia team at The BMJ (British Medical Journal). The data underpinning the graphic was collected from 27 experts via a knowledge elicitation study. It includes discussion of lessons learned about collecting and visualising uncertain data, and the benefits of user testing.

Available under the CC BY-NC 4.0 license.

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  1. Cairo, A.
    (2016) The Truthful Art: Data, charts, and Maps for Communication. New Riders.
    [Google Scholar]
  2. Cleveland, W. & McGill, R.
    (1985) Graphical Perception and Graphical Methods for Analyzing Scientific Data. Science, 2291, 828–833. 10.1126/science.229.4716.828
    https://doi.org/10.1126/science.229.4716.828 [Google Scholar]
  3. Freeman, A. L. J., Parker, S., Noakes, C., Fitzgerald, S., Smyth, A., Macbeth, R., Spiegelhalter, D. & Rutter, H.
    (2021) Expert elicitation on the relative importance of possible SARS-CoV-2 transmission routes and the effectiveness of mitigations. BMJ Open, 11(12). 10.1136/bmjopen‑2021‑050869
    https://doi.org/10.1136/bmjopen-2021-050869 [Google Scholar]
  4. Hengesbach, N.
    (2022) Undoing Seamlessness: Exploring Seams for Critical Visualization [preprint]. https://arxiv.org/pdf/2203.02241.pdf
    [Google Scholar]
  5. Kirk, A.
    (2019) Data Visualisation: A Handbook for Data Driven Design (2nd Ed). SAGE.
    [Google Scholar]
  6. Nielsen, J.
    (2012) How many test users in a usability study?https://www.nngroup.com/articles/how-many-test-users/
    [Google Scholar]
  7. Rutter, H., Parker, S., Stahl-Timmins, W., Noakes, C., Smyth, A., Macbeth, R., Fitzgerald, S. & Freeman, A.
    (2021) Visualising SARS-CoV-2 transmission routes and mitigations. The BMJ. 3751. 10.1136/bmj‑2021‑065312
    https://doi.org/10.1136/bmj-2021-065312 [Google Scholar]
  8. Sless, D.
    (2008) Measuring information design. Information Design Journal16(3), 250–8. 10.1075/idj.16.3.11sle
    https://doi.org/10.1075/idj.16.3.11sle [Google Scholar]
  9. Spiegelhalter, D., Pearson, M. & Short, I.
    (2011) Visualizing uncertainty about the future. 3331, 1393–400. 10.1126/science.1191181pmid:21903802
    https://doi.org/10.1126/science.1191181pmid:21903802 [Google Scholar]

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