E.g., from the article: "Dr Feigl-Ding explains that R0 is the “R reproductive number at time 0 before countermeasures”. He points out that this is not the R(effective) at current time under mitigation measures such as distancing and testing, tracing and quarantine, which are expected to slash chains of transmission."
Thanks for adding that. Interestingly, Eric Feigl-Ding is a bit like Nicholas Christakis in that he is not an expert in infectious diseases, however he has positioned himself as an expert on COVID19. This seems to have annoyed some of the real experts like Marc Lipsitch. However, Feigl-Ding probably does deserve some credit for sounding the alarm relatively early on COVID19.
The real experts were all saying ‘it’s too early to say for sure’ and he was saying, yes, but the worst case scenario is really bad and everyone should know that.
