James Moore-Stanley added However_the_World_Health_Organisation__.tex  almost 8 years ago

Commit id: deca95c66de41d3c7441908349961d3bc8102bd8

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\\However, the World Health Organisation statistics for this particular outbreak would not concur with predictions using the basis SIR model; the actual spread has been significantly different to that offered by the above graph. This would indicate that the basis SIR model would not be useful for predicting future trends.  \\This leads to the question 'why has the model failed?'. The answer lies in the assumptions made when asserting the model upon a population. The first of these is that the value for $R_0$ simply cannot be said to be true for all members of a population. Their differing socio-economic backgrounds may lead to these factors:  \begin{enumerate}  \item Some backgrounds are more likely to be more densely populated  \item Some backgrounds may have restricted access to mosquito resistant materials  \item Some backgrounds may have a lower propensity to be vaccinated.  \end{enumerate}  It is very different to try to quantify these factors and then adapt the basis model accordingly. There is however one other major factor that can be quantified. The basis SIR model naturally assumes that the transmission of the disease occurs between humans. However, this not the case for