Your unvaccinated friend is roughly 20 times more likely to give you COVID
- Written by Christopher Baker, Research Fellow in Statistics for Biosecurity Risk, The University of Melbourne
As lockdowns ease in New South Wales, Victoria and the ACT, and people return to work and socialising, many of us will be mixing more with others, even though a section of the community is still unvaccinated.
Many vaccinated people are concerned about the prospect of mixing with unvaccinated people. This mixing might be travelling on trains or at...





