From wiki: "R0 is not a biological constant for a pathogen as it is also affected by other factors such as environmental conditions and the behaviour of the infected population."
And learned the difference with Rt today (which some others are quoting, eg for Alberta), is that Rt is computed, while R0 is a guess based on a model, to try to normalize Rt so that it is more comparable over time and place. So I thought that was cool!
:) Many of us have felt something along those lines since the early times.
But e.g. the viral load for said variant was reported as _1000x_ Wuhan weeks ago, value changed to _3x_ days ago.
I read the emergence of Tinnitus after COVID-19 weeks ago at _67%_, today at _0.shmbrmbsomething_.
We are flooded in bad numbers. (And of course, that R0 is also circumstantial, vs the examples above...)
If you're referencing the CDC's case study from Provincetown, I think it's important to point out that the R value cited is the R value during Bear Week, not on average.