The influence of constraints on the efficient allocation of resources for HIV prevention

The recent article by Stopard et al.[1] investigated how ‘real-world’ constraints in mathematical modelling analyses affect recommendations for resource allocation. This is an important question: the guidance that models provide on optimal HIV responses should always be considered in light of the full health system context, which may differ greatly from what would be modelled if the realities of logistic, political, ethical and programmatic...