Which combination describes PH 3.0?

• A. Infectious disease focus only.
• B. Chronic disease and prevention.
• C. Systems thinking and equity.
• D. Sanitation and vector control.

Answer: (C)

PH 3.0 centers on systems thinking and equity. Systems thinking means examining how different parts of the community—housing, transportation, education, employment, environment, and policy—interact to shape health outcomes, and designing interventions that address those interconnections rather than tackling diseases in isolation. Equity focuses on ensuring that health improvements reach all groups, especially those who have been underserved or disproportionately affected by health disparities, often through community engagement and targeted resources. This combination marks PH 3.0 as a move beyond single-disease programs toward cross-sector collaboration, data-informed decisions, and upstream efforts that aim to lift health for entire populations while actively reducing inequities. The other options describe narrower domains—infectious disease focus, a traditional emphasis on chronic disease and prevention, or specific sanitation and vector-control activities—that don’t capture the broader, systemic, equity-centered approach characteristic of PH 3.0.