GiveWell spoke with Dr. Klemm, Mr. Doledec, and Mr. Grant of Helen Keller International (HKI) as part of GiveWell's review of HKI's work on vitamin A supplementation (VAS) in sub-Sahara Africa programs. Conversation topics included: evidence for and data on the prevalence of vitamin A deficiency (VAD) and the impact of VAS in HKI's regions; the decision-making framework HKI is helping the Global Alliance for Vitamin A to develop for scaling back VAS; changes in child mortality rates in HKI's sub-Sahara Africa countries; HKI's areas of expertise and role in the field; and HKI's funding situation and funding for VAS in general.