Vitamin A supplementation (VAS) programs targeted at children aged 6–59 months are implemented in many countries. By improving immune function, vitamin A (VA) reduces mortality associated with measles, diarrhea, <span class="attribute-to-highlight medbox">and</span> other illnesses. There is currently a debate regarding the relevance of VAS, but amidst the debate, researchers acknowledge that the majority of nationally-representative data on VA status is outdated. To address this data gap <span class="attribute-to-highlight medbox">and</span> contribute to the debate, we examined data from 82 countries implementing VAS programs, identified other VA programs, <span class="attribute-to-highlight medbox">and</span> assessed the recentness of national VA deficiency (VAD) data.<br> Article published in: Nutrients, 2017, 9, 190<br> https://doi.org/10.3390/nu9030190