Thanks that's today sortedYou can read that and report back,because I sure did not read itTheory versus Data: How to Calculate R0? - PMC
To predict the potential severity of outbreaks of infectious diseases such as SARS, HIV, TB and smallpox, a summary parameter, the basic reproduction number R0, is generally calculated from a population-level model. R0 specifies the average number ...www.ncbi.nlm.nih.gov