Part I: The Foundations of the Nutrition-Infection Nexus.- Pathways Linking Nutritional Status and Infectious Disease: A Conceptional Framework.- Core Principles of Nutrition.- Primer on Immune Response and Interface with Malnutrition.- Part II: Types of Infectious Diseases and Influences of Nutrition.- Bacterial Infections and Nutrition: A Primer.- Viral Infections and Nutrition: Influenza Virus as a Case Study.- Nutrition and Protozoan Pathogens...