Supplementary Table S1 – Study Characteristics: Nutritional Interventions and Vaccine Response in Undernourished Children

This dataset presents the detailed characteristics of 42 studies included in the systematic review titled “Micronutrient and Protein-Energy Supplementation Enhance Vaccine Responses in Undernourished Children.” Variables include study ID, country/region, nutritional intervention, vaccine assessed, design, sample size, age, immunologic outcome, and reference. This table supports the manuscript submitted to F1000Research (Manuscript ID: 164227) and may be used for replication or integration into future living systematic reviews.