Flow diagram of the model.

<p>Simulated population is stratified in compartments by gender as men (subscript m) or women (subscript w) and by HIV status as susceptibles (S), infected with HIV (I) and sexually inactive due to progression to AIDS (A). Female population is additionally stratified by pregnancy status (superscript p indicates pregnancy) and by usage of VMB (superscript p indicates the use of VMB). VMB users strictly follow the prescribed regimen. A complete description of the model including the flow rates and the expressions for the forces of infections (λ) is presented in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0073770#pone.0073770.s001" target="_blank">File S1</a>.