Incentives and immunization rates

In rural India, child immunization rates were recorded across three different conditions. One condition comprised of a regularly provided immunization camp. The second comprised of a regularly provided immunization camp, which provided small incentives like food and supplies for completed immuniztions. The third condition was a control condition. Although the first group showed more immunizations than the control group (18% immunized versus 6% immunized), the condition that employed incentives was the most successful of the three, with immunization rates at 39%.