Figure 3.

SIR compartmental model of disease transmission incorporating vaccination and treatment. Susceptible individuals (S) who are vaccinated proceed to class V, at which point they are considered immune. Upon treatment, infectious individuals (I) proceed to class T, at which point their infectiousness is reduced.

Coburn et al. BMC Medicine 2009 7:30   doi:10.1186/1741-7015-7-30
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