SM,BRM and DTD are supported by the Bill and Melinda Gates Foundation(OPP1110049);MCB,KMM and DTD are supported through the HPTN Modeling Center by subcontract from SDMC:HIV Prevention Trials Network funded by the U.S.National Institutes of Health(NIH UM1 AI068617).
Background:The epidemiological tipping point ratio(TPR)has been suggested as a useful indicator to monitor the scale-up of antiretroviral treatment(ART)programmes and determine when scale-up is sufficient to control t...