The R0 and the Case Fatality Rate are completely meaningless at the moment... the R0 because we have absolutely no clue how many have been infected partly because of those with mild illness who haven't presented at Medical care facilities and been tested and also the somewhat doubtful scale of reporting by the Chinese authorities. And the case fatality rate because most are still in the midst of their illness.... look at the statistics ... at the moment out of 11,000 confirmed cases 250ish have died, and 250ish have recovered... this leaves a heck of a
lot of uncertainty about the fate of the others and therefore the validity of
that 2% case fatality rate