Deterministic Versus Stochastic Epidemic Models
It is important to stress that the deterministic models presented here are valid only in case of sufficiently large populations. Moreover, even in case of large populations, as pointed out among the firsts by M. S. Bartlett, in some cases deterministic models should cautiously be used. For example in case of seasonally varying contact rates the number of infectious subjects may reduce to infinitesimal values, thus maybe invalidating some results that are obtained in the field of chaotic epidemics.
Read more about this topic: Compartmental Models In Epidemiology
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