Social Distancing, Herd Immunity and R0
How fast and how far can Covid 19 spread? Well.. I’ve seen the R0 as high as R3 and as low as R2. For the graphic below Covid 19 is given the R0 of R2.3.
Herd immunity is disease-specific and is influenced by the ease with which the disease spreads from person to person, or the level of contagiousness.