Global health explained: definition, how it differs from international and public health, key actors, financing, major priorities and persistent structural challenges.
The major global health challenges: NCDs, antimicrobial resistance, pandemic risk, workforce shortages, climate change, mental health and health financing gaps.
How outbreaks are detected and controlled: surveillance systems, verification, epidemiological investigation, IHR obligations, containment measures and response gaps.
How global immunization programs work: herd immunity, cold chain, delivery systems, WHO and Gavi roles, vaccine safety monitoring and barriers to coverage.
Health equity explained: what it means, how it differs from equality, social determinants of health, global and within-country disparities, and what actually works.