basic reproduction number


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basic reproduction number

A metric used in epidemiology, which corresponds to the mean number of new cases of infection linked to a person infected shortly after the pathogen was introduced into a population with no pre-existing immunity, in absence of interventions to control the infection. The basic reproduction number is a dimensionless parameter which encapsulates the biological details of different transmission mechanisms.

For microparasites, Ro is defined as the average number of secondary cases of infection to which one primary case gives rise throughout its infectious period if introduced into a defined population consisting solely of susceptible individuals; for macroparasites, Ro is the average number of female offspring (or offspring for hermaphroditic species) produced throughout the lifetime of a mature female parasite, which themselves achieve reproductive maturity in the absence of density-dependent constraints on the parasite establishment, survival or reproduction
References in periodicals archive ?
From the overall trend of each rail line, when the basic reproduction number is bigger than 1, the rumors will be spread, which means the positive equilibrium point is globally asymptotically stable.
By the comparison of the basic reproduction number of SIWR rumor propagation model and SIR rumor propagation model, it is discovered that the basic reproductive number of SIWR rumor propagation model is greater than the basic reproductive number SIR rumor propagation model, which means that SIR model would underestimate the basic reproduction number.
In this case, the basic reproduction number is R = 0.
Because the resistant strength coefficients are difficult to control, horizontal transfer coefficients are the key parameters that not only can affect the basic reproduction number but also can be controlled by human.
An example is given to show that the basic reproduction number of
the curves of the average basic reproduction number [[R.
inf]) is needed in our models to reproduce the observed outbreak size, which translates to a higher basic reproduction number, [R.
We calculated results for 2 reproduction number values, 31 and 16, which belong to a range that is high when compared with published estimates of the basic reproduction number of measles ([R.
We derived expressions for the basic reproduction number ([R.
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