Key points
- Public health policy is the set of laws, rules, funding and institutions through which governments protect population health.
- Only the WHO Director-General can declare a Public Health Emergency of International Concern (PHEIC). National authorities declare emergencies within their own countries.
- Nine PHEICs have been declared since 2009; two are active — polio and Ebola (Bundibugyo).
- The amended International Health Regulations entered into force on 19 September 2025, adding a new “pandemic emergency” tier.
Direct answer: Public health policy is the set of laws, rules, funding decisions and institutions through which governments protect the health of whole populations — from clean-water standards to the rules for declaring an international emergency. This article explains the policy that matters most at the global level: who can declare a health emergency, what a Public Health Emergency of International Concern is, and how the rules changed in 2025.
What public health policy is
Public health policy is not one document. It is the collection of decisions that shape population health: laws on food safety and tobacco, funding for vaccination programmes, rules for clean water and air, the organisation of health services, and the international agreements that govern outbreaks. Some of it is visible — a smoking ban, a vaccine schedule — and some of it is machinery — a funding formula, a surveillance network, a treaty article.
The policies that matter most to a general reader are the ones that decide what happens when something goes wrong. That is where this article concentrates: emergencies, declarations, and the international rules.
Who can declare a public health emergency?
Internationally, only one person can: the Director-General of the World Health Organization, who declares a Public Health Emergency of International Concern — a PHEIC — under the International Health Regulations. The declaration follows advice from an emergency committee of independent experts, and it triggers coordinated international action: shared information, travel and trade recommendations, and support for affected countries.
Within a country, the answer is different in every country. National governments and health authorities declare emergencies under their own laws — a health minister, a head of government, or a designated agency, depending on the constitution. No worldwide page can list every country’s procedure, and this article does not try. The point that general readers most often miss is the split itself: the WHO declaration is international, and national declarations are national. One does not automatically cause the other.
PHEIC vs pandemic emergency
The International Health Regulations (2005), as amended, entered into force on 19 September 2025 with a new tier. Alongside the PHEIC, there is now a “pandemic emergency” — a higher level of alarm, declared when a PHEIC involves a communicable disease with the potential to become a pandemic. The pandemic emergency is the top of the scale; the PHEIC remains the working declaration for serious cross-border events.
A PHEIC is not the same as a pandemic. A pandemic describes the worldwide spread of a disease — a statement about geography. A PHEIC is a formal legal declaration — a statement about risk, coordination and obligations. An event can be one without the other, and the two words should not be used as synonyms.
Nine PHEICs, two active
Nine PHEICs have been declared since the Regulations took effect in 2009. Two are active: polio, which has been a PHEIC since 2014, and Ebola disease caused by the Bundibugyo virus. The count is a matter of public record, and it changes only when the Director-General declares or ends one — which is why this page is dated, and why the outbreak pages on this site are re-checked weekly while a PHEIC is active.
The Pandemic Agreement
On 20 May 2025 the World Health Assembly adopted the WHO Pandemic Agreement, a treaty on preventing, preparing for and responding to pandemics. It covers surveillance, equitable access to vaccines and treatments, and the sharing of pathogen data. One part — the annex on pathogen access and benefit-sharing, known as PABS — was not finished at adoption, and its negotiation was extended to May 2027. The Agreement is a framework: its effect depends on ratification and on the annex being agreed.
Policy beyond emergencies
Most public health policy is not about emergencies at all. It is the ordinary machinery: how health services are funded, who is covered, which services are free, how medicines are priced, how food and water are kept safe, and how data is collected. The funding guide, the models guide and the universal-health-coverage guide on this site each explain one part of that machinery. Policy is what turns a health goal — fewer deaths, fairer access — into budgets, rules and institutions.
A governance note, dated
The United States completed its withdrawal from the World Health Organization on 22 January 2026. That is a governance fact with practical consequences: the United States no longer takes part in WHO decision-making, including the processes described above. This article records it because a reader comparing sources will meet it; it is stated here once, dated, and left at that.
Frequently asked questions
Who can declare a public health emergency?
Internationally, only the WHO Director-General can declare a Public Health Emergency of International Concern. Within a country, the national government or health authority declares emergencies under its own laws.
Is a PHEIC the same as a pandemic?
No. A PHEIC is a formal WHO declaration that an event is a public health emergency of international concern. A pandemic describes the worldwide spread of a disease. The two are different decisions.
How many PHEICs have there been?
Nine since 2009. Two are active: polio and Ebola (Bundibugyo).