With renewed emphasis on the importance of primary health care (PHC) as a means to achieve global public health goals, health campaignTime-bound, intermittent activities which are deployed to address specific epidemiologic challenges, expediently fill delivery gaps, or provide surge coverage for health interventions. actors can identify ways to assess the relative effectivenessThe ability of a campaign to achieve specific objectives related to coverage, equity, efficiency and impact. and sustainability of different community-based platforms. Dr. Andreas Hasman, Nutrition Specialist and his team at UNICEF Programme Division set out to explore which measures of effectiveness, in addition to coverageA proportion (%) that reflects the number of people receiving (an) intervention(s) divided by the total number of people eligible to receive, would be helpful to program implementers. They conducted literature reviews, consultations, and quantitative analysis to identify applicable metrics for diagnostics and tracking of progress toward optimized effectiveness. Their study focuses on vitamin A supplementation (VAS), which is one of the largest preventive public health programs in the world that reaches almost 250 million children every year. Vitamin A was chosen because it is an intervention that is delivered in a large number of countries, using a variety of community-based platforms, and on which significant administrative and survey data are available. However, the study’s conclusions relating to measures of delivery effectiveness will apply to a wide range of health and nutrition interventions. View this Test & Learn session to consider the findings, how they translate across disease domains, and possible implications for campaign co-deliveryCo-delivery of interventions in campaigns occurs when most or all typical campaign components (microplanning, registration, logistics, implementation, and evaluation) are coordinated. Co-delivery, and common campaign planning, implementationImplementation aims to develop strategies for available or new health interventions in order to improve access to, and the use of, these, and follow-up practices.