Universal Health Coverage (UHC) is one of the most ambitious yet necessary commitments made in global public health. Enshrined in Sustainable Development Goal 3.8 of the United Nations 2030 Agenda, it represents a shared global mandate to ensure that everyone can access the required quality health services without financial hardship. Yet UHC is not merely a technical destination. It is a deeply political and social journey shaped by struggles for justice, fairness, and inclusion.
This insight lies at the heart of the 18th World Congress on Public Health (WCPH 2026) theme: Health Without Borders: Equity, Inclusion, and Sustainability. UHC challenges borders between people, systems, and societies, asking not only how health systems function, but whom they ultimately serve.
Financing mechanisms are where the principle of solidarity becomes tangible, reflecting societies’ choices about fairness and collective responsibility. Countries that have advanced toward UHC have often done so in response to deep social inequalities that demanded new forms of redistribution. In Thailand, the Universal Coverage Scheme emerged in the early 2000s after years of advocacy by health reformers and civil society who argued that access to care should not depend on employment status or income. Built largely on tax financing, the reform rapidly expanded coverage to millions previously excluded from the health system.
Similarly, the National Health Service in the United Kingdom was born from the social solidarity forged after World War II, when the public demanded a fairer society and a health system based on need rather than ability to pay. Financing reforms in both contexts were therefore not only technical adjustments, but expressions of collective commitment to social justice.
Political commitment gives UHC durability by embedding health equity within national institutions and constitutional frameworks. In Brazil, the creation of the Unified Health System (SUS) followed the country’s transition from dictatorship to democracy in the late 1980s. Health reformers, academics, and social movements successfully framed health as a constitutional right, linking universal health care to the broader struggle for citizenship and democratic inclusion.
In South Africa, where WCPH 2026 will be hosted, the move toward National Health Insurance (NHI) reflects the country’s ongoing effort to address the deep structural inequalities inherited from apartheid. Rooted in the country’s constitutional right to health care, NHI represents an attempt to transform a highly unequal, fragmented health system into one based on solidarity and universal access to care. In both contexts, UHC reflects a political project of nation-building as much as health system reform.
Grassroots mobilisation is often the spark that transforms UHC from policy aspiration into social reality. Communities, civil society organisations, labour movements, and health professionals have historically played critical roles in demanding equitable health systems. In Rwanda, community-based health insurance achieved high enrolment because it was grounded in local participation and trust, reflecting a broader national effort to rebuild social cohesion after the 1994 genocide. Grassroots actors in many countries continue to translate lived experiences of exclusion into advocacy for reform, ensuring that UHC remains responsive to those who need it most. Without this social energy, technically sound reforms can stall or lose legitimacy; with it, health systems gain resilience and public ownership.
As the global public health community gathers momentum toward WCPH 2026, the unfinished UHC agenda offers both urgency and inspiration. South Africa’s own NHI journey, like the experiences of Thailand, Brazil, Rwanda, and the United Kingdom, reminds us that UHC is never achieved by policy design alone. It emerges when societies decide that health equity matters enough to organise systems, resources, and political will around it.
WCPH 2026 will bring together stories of reform, solidarity, and collective action from across the world, inviting the global public health community to reimagine health without borders not simply as a technical goal, but as a living movement for justice, inclusion, and the enduring promise of health and wellbeing for all.