James Moore-Stanley edited subsection_Basic_Reproductive_Number_The__.tex  almost 8 years ago

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\subsection{Basic Reproductive Number}  The basic reproductive number may be thought of as the number representing the number of secondary cases spawning from one case of an infectious disease in an otherwise unaffected population. It is represented by notation $R_0$. It would therefore be logical to say that if $R_0 \geq 1$, the disease is very likely to spread in a population. Conversely, if $R_0 \leq 1$, the disease is very likely to die out, and not affect the population. It is not important for the purposes of this exploration to mathematically derive the formula for calculating the value of $R_0$, but rather understand the \textit{notion} of $R_0$ so that its use may be understood in the section \textit{Linking the basis SIR model, Basic Reproductive Number, and Herd Immunity.} In order to have a sufficient understanding of where $R_0$ comes from, the following factors are taken into account and processed into calculating $R_0$:  \begin{itemize}  \item The rate of contact in the host population  \item The probability of contracting the disease through contact  \item The latent period of the infection i.e. the length of time a person is still contagious.  \end{itemize}