What is the basic reproduction number (R0) of
SARS-CoV-2?
It is difficult to determine as it varies greatly from country to
country, depending on how well countries control their epidemics with
widespread testing, case isolation and vigorous contact tracing, testing
and isolation if positive. In countries that do this well, the R0 can be
very low indeed. In countries that fail to control the spread of the
virus, the R0 is high but unknown as SARS-CoV-2 spreads untested and
therefore undetected. It has been estimated to be
~2.2.214