Originally Posted by
MickG0105
R0 is not a necessarily good indicator of pandemicity. Measles has an R0 of 12-16, seasonal influenza has an R0 of 1.3.
Herd immunity, courtesy of vaccinations, renders measles inconsequential, except of course in clusters of fact-resistant flat earthers.
So, yeah, the R value alone doesn’t predict spread except for those diseases for which there are no natural limits. Even then, diseases like SARS were eliminated because of behaviour changes and other factors.