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 ...

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 ...

The coronavirus disease 2019 (COVID-19) pandemic started with an outbreak of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Wuhan, Hubei province, China, in December 2019. Since ...

The reproduction number 𝑅 is a key indicator used to monitor the dynamics of Covid-19 and to assess the effects of infection control strategies that frequently have high social and economic costs.

Scientists from Imperial College London and the University of Cambridge, UK, have recently proposed and applied a correction to EpiEstim, a statistical method to estimate the time-dependent ...

Life cycles require the creation of an autonomous individual, that individual’s growth and that individual’s reproduction In sexual reproduction, gametes containing a single set of chromosomes combine ...