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Primary Health Care

GMJ News knowledge hub · last reviewed August 2026 · Georgian Medical Journal

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Primary health care (PHC) is the foundation of universal health coverage and the most equitable, cost-effective approach to achieving health for all: the 1978 Alma-Ata Declaration first proclaimed 'Health for All by 2000' through PHC, and the 2018 Astana Declaration renewed this commitment (WHO). 90% of essential health services can be delivered through strong primary health care — reducing hospital admissions, controlling chronic diseases and responding to health emergencies. Community health workers, family medicine, preventive care and health promotion are its cornerstones.

Key messages

The backbone of UHC
Primary health care (PHC) is the most equitable and cost-effective way to achieve universal health coverage. 90% of essential health services — prevention, promotion, treatment, rehabilitation, palliative care — can and should be delivered through strong PHC (WHO).
Alma-Ata and Astana
The 1978 Alma-Ata Declaration proclaimed Health for All through PHC; the 2018 Astana Declaration renewed this commitment, calling for countries to strengthen PHC as the foundation of UHC and to engage communities.
Community health workers
Community health workers (CHWs) — trained, trusted members of the communities they serve — extend PHC to remote and underserved populations. They are the most cost-effective frontline health workers for many primary care functions.
Benefits of strong PHC
Countries with strong PHC systems have: better health outcomes; lower hospitalisation rates; greater equity; more efficient health spending; higher patient trust; and stronger resilience during health emergencies. PHC countries outperformed in COVID-19 response.
Multisectoral — beyond the clinic
PHC is more than medical care: it includes health education, nutrition, family planning, immunisation, basic sanitation, prevention and treatment of common diseases. WHO defines it as an approach spanning health, social, economic and environmental determinants.
Primary care must be high quality
The quality of primary care — not just coverage — determines health outcomes. WHO's integrated primary care approach combines person-centred care with a network of services, information systems and community engagement.

Key statistics

90%
of essential services can be through PHC
WHO
1978
Alma-Ata Declaration year
WHO
2018
Astana Declaration year
WHO
4.5B
people without full essential health coverage
WHO 2023
2B
people face financial hardship from health spending
WHO 2023
$1B/day
financing gap for PHC in LMICs
WHO/World Bank

UHC service coverage index by region 2015-2023 — WHO/World Bank

Source: WHO/World Bank UHC Service Coverage Index. Progress has stalled across all regions since 2019.

Glossary of key terms

Primary health care (PHC)
WHO/Alma-Ata/Astana
A whole-of-society approach to health that aims to ensure the highest attainable level of health and well-being across the full lifespan, combining primary care services with determinants of health interventions and community engagement.
Alma-Ata Declaration (1978)
WHO/UNICEF
The landmark 1978 declaration calling for Health for All by 2000 through primary health care — addressing not just disease but its social, economic and political causes. It defined PHC and called for community participation.
Astana Declaration (2018)
WHO
The 2018 Global Conference on PHC declaration renewing commitment to PHC at the 40th anniversary of Alma-Ata — calling for empowered populations, multisectoral action, and PHC as the foundation of UHC.
Community health worker (CHW)
WHO
A health worker trained from and serving their community — providing a link between community members and the formal health system. CHWs extend PHC to remote populations, improve health equity and are the backbone of PHC in many LMICs.
UHC Service Coverage Index
WHO/World Bank
A composite indicator tracking PHC service coverage across 14 tracer interventions (reproductive health, child health, infectious diseases, NCDs) on a 0-100 scale. The global index was 68 in 2023 and has stalled since 2019.
Integrated people-centred health services
WHO
A WHO framework promoting health services organised around the needs of people rather than diseases or institutions — with care coordination, continuity and people as partners in their own health.

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