We published an article earlier this month that contained incorrect estimates for the basic reproduction number (R0) for COVID subvariants BA.4/BA.5 and BA.2. We have now corrected the error, but I ...

Scientists say there is no evidence that the BA.5 version of the Omicron coronavirus variant is more transmissible than measles, or that it has a basic reproduction number, or "R-naught" (R0), of 18.6 ...

(K=population size, beta=transmission rate, alpha=recovery rate, S0=susceptible at the onset of the epidemic, S∞=susceptible at the end of the epidemic) of an infection leading to immunity depends on ...

As more people take precautions, the rate goes down; otherwise, the reverse kicks in BASIC FORMULA: R0 (the infection reproduction number) is often used in epidemiology and public health literature.

This article was last updated on 13 October 2021. The basic reproduction number, also known as the R or R0, is the average number of people one person with an infectious disease will likely infect in ...