Rounds

Coronavirus: how many will get it & in which round?  If R (reproduction no.) is the average number of people who get infected from 1 new case, with R2 (each new case infects 2 others) after 5 rounds, we have 32 new cases.  If it’s R3, after 5 rounds we have 243 new cases.  COVID-19 is currently estimated at R1.5 to R3.5.  Do the maths

Guessed the Word?         Series 55 (4/7)              pic: Dieter_G