Why We Often Notice Public Health Only When Something Goes Wrong

Public health is often noticed late. Surveillance, vaccination programmes, food safety, environmental monitoring, and health promotion look boring when they succeed — and become urgent theatre when they fail. That pattern is not just media psychology. It is how health systems budget: clinical emergencies attract money; preventive capacity is treated as optional overhead until a shock arrives.

Invisible when it works

CDC’s introduction to public health describes the field as population-focused prevention and protection — work that is often upstream of hospitals. When water stays safe and outbreaks are contained early, the public rarely credits the system. Political attention follows visible failure more reliably than quiet success.

What crisis made visible

WHO’s May 2022 estimates put excess mortality associated with COVID-19 at approximately 14.9 million deaths between 1 January 2020 and 31 December 2021. Middle-income countries accounted for 81% of those excess deaths (53% lower-middle-income and 28% upper-middle-income). Excess mortality captured both direct COVID deaths and indirect system failures — interrupted care, delayed detection, overloaded services.

WHO estimated approximately 14.9 million excess deaths associated with the COVID-19 pandemic in 2020 and 2021.

14.9M

excess deaths, 2020–2021 (WHO)

Source: WHO excess deaths news release (5 May 2022).

Middle-income countries accounted for 81% of the 14.9 million excess deaths; high- and low-income countries accounted for the remaining 19% combined.

81% middle-income 19% high- + low-income

Source: WHO — 14.9 million excess deaths associated with COVID-19 (2020–2021).

Essential functions, chronic underinvestment

WHO’s work on essential public health functions (EPHFs) describes twelve core activities for population health — from surveillance and emergency management to health promotion and governance. WHO technical briefs and guidance note that resources are often skewed toward clinical services and emergency response, leaving preventive and protective capacities weak. A BMJ Global Health commentary argues that EPHFs are central to resilient systems precisely because they reduce risk before secondary care is overwhelmed.

Preparedness after the headlines

ECDC’s Public Health Emergency Preparedness Assessments (2024–2026 cycle) examine whether EU/EEA countries implement prevention, preparedness, and response plans — not only whether they wrote them. Sustained planning, exercises, surveillance, and surge capacity are the opposite of one-off crisis spending. The hard question after COVID is whether political systems fund those capacities in ordinary years.

Closing

Essential public health functions look optional in quiet years and indispensable in crisis. The evidence after COVID-19 did not invent that pattern — it made the cost of ignoring it harder to deny.

We still treat public health too often like insurance we resent paying for until the fire starts. The tragedy is not that crises reveal gaps — it is that we keep rediscovering the same gaps, then cut the budgets that would have made them smaller. Underfunding surveillance, workforce, and community protection in ordinary years is not thrift; it is deferred damage. The better test is to judge public health by what is quietly prevented, not only by what becomes visible when prevention fails.

Sources & further reading

1. WHO — Application of the essential public health functions
2. WHO — Essential public health functions technical brief
3. WHO — 14.9 million excess deaths associated with COVID-19 (2020–2021)
4. ECDC — Public Health Emergency Preparedness Assessment (2025 example)
5. BMJ Global Health — Essential public health functions: the key to resilient health systems
6. CDC — Introduction to Public Health