Use and misuse of a discount voucher scheme as a subsidy for insecticide-treated nets for malaria control in southern Tanzania.

Since 1997, discount vouchers for insecticide-treated nets (ITNs) have been used in two rural districts of southern Tanzania as a way to target subsidies to children under 5 years and pregnant women. We assessed appropriate use and misuse of discount vouchers through a follow-up study of 104 randomly selected vouchers. We traced these vouchers from their original issue in mother-and-child health (MCH) clinics through to being redeemed at a sales agent.