- Illness and Sick-Role Behavior
- Immigrants, Immigration
- Immunizations
- Impartiality and Advocacy
- In Vivo and in Vitro Testing
- Incidence and Prevalence
- Incubation Period
- Indigenous Populations
- Inequalities in Health
- Infant Mortality Rate
- Influenza
- Information Systems
- Information Technology
- Informed Consent
- Inhalable Particles (Sulfates)
- Initiator
- Injection Drug Use and Hiv Infection
- Institute of Medicine
- International Classification of Diseases
- International Development of Public Health
- International Development Research Centre
- International Health
- International Nongovernmental Organizations
- International Sanctions, Health Impact of
- Internet
- Iodine
- Iron
- Isolation
