R0 is not intrinsic to the virus but is heavily dependent on other factors. E.g. if you put 1 infected person in a crowded bus for a day long trip, the R0 with

R0 is not intrinsic to the virus but is heavily dependent on other factors. E.g. if you put 1 infected person in a crowded bus for a day long trip, the R0 within that group would probably be close to number of passengers.