Zambians Still Dying From Diseases We Know How to Prevent

Malaria can be prevented and cured. Tuberculosis can be treated. HIV can now be managed effectively with treatment. Many diarrhoeal diseases can be prevented through safe water, sanitation and hygiene. High blood pressure can be detected with a simple test and controlled before it causes a stroke or heart disease.

Yet these conditions continue to kill Zambians.

The World Health Organization’s latest Zambia health profile, based on 2021 mortality estimates, places HIV/AIDS, malaria, lower respiratory infections, tuberculosis and diarrhoeal diseases among the country’s ten leading causes of death. Stroke and ischaemic heart disease are also on the list. (datadot)

The question, therefore, is no longer simply whether medicine knows how to prevent or treat many of Zambia’s major diseases.

It is why people are still dying from them.

The Old Diseases Have Not Gone Away

Zambia’s health challenge is unusual because the country is effectively fighting two battles at once.

Communicable diseases that have troubled the country for decades remain widespread. Zambia’s latest National Health Accounts report says malaria accounted for approximately 25.3 percent of reported morbidity in 2023, while diarrhoeal diseases accounted for around 8.1 percent. (WHO | Regional Office for Africa)

Malaria illustrates the contradiction particularly clearly.

There is no mystery about how the disease spreads. Mosquito nets, indoor residual spraying, preventive medicines in appropriate populations, early testing and effective treatment are established tools for reducing illness and deaths. WHO describes malaria as both preventable and curable. (World Health Organization)

Yet malaria remains among Zambia’s major causes of illness and death.

Tuberculosis presents a similar picture. It is preventable and curable, and Zambia has made substantial progress: WHO’s latest global assessment indicates the country is among a small group of high-TB-burden countries approaching the global 2025 milestone for reducing TB deaths compared with 2015. (World Health Organization)

That progress matters.

But people are still developing TB, and successful treatment depends heavily on finding them early, diagnosing the disease correctly and ensuring patients complete treatment.

Then There Is HIV

Few areas demonstrate Zambia’s ability to change a health crisis more clearly than HIV.

Antiretroviral medicines have transformed HIV from an infection that once meant dramatically shortened life expectancy into a manageable chronic condition for people who are diagnosed and remain on effective treatment.

But HIV/AIDS still appears among Zambia’s leading causes of death in WHO’s mortality estimates. (datadot)

And new challenges have emerged.

UNAIDS reported in 2025 that Zambia was recording approximately 23,000 new HIV infections annually, including around 8,700 among people aged 15 to 24. It also warned that disruptions to externally funded prevention programmes had affected services including PrEP, voluntary medical male circumcision and programmes targeting young people and vulnerable populations. (UNAIDS)

The lesson is uncomfortable but important: medical progress does not automatically become public-health success.

A treatment can exist, but it cannot save someone who is never diagnosed, cannot access it or stops receiving it.

Zambia Is Also Facing a Newer Health Threat

While Zambia continues fighting infectious diseases, another group of illnesses is becoming increasingly important.

Noncommunicable diseases such as hypertension, stroke, heart disease, diabetes, cancer and chronic respiratory disease accounted for about 31 percent of deaths in Zambia in WHO’s 2021 estimates. (WHO CDN)

High blood pressure provides perhaps the clearest warning.

WHO previously estimated that about 1.3 million Zambians aged 30 to 79 had hypertension. Only 44 percent had been diagnosed, 24 percent were receiving treatment and just 10 percent had their blood pressure controlled. (World Health Organization)

That means someone can feel perfectly healthy while damage is developing silently.

Then the first obvious sign may be a stroke or another cardiovascular emergency.

Many of the risk factors are well known: unhealthy diets, tobacco, harmful alcohol use, physical inactivity and high blood pressure itself. WHO says addressing major behavioural and metabolic risks, together with early detection and treatment, can prevent or substantially delay many premature deaths from noncommunicable diseases. (World Health Organization)

Children Are Part of the Story Too

Prevention begins long before adulthood.

Vaccination has eliminated or dramatically reduced many diseases that once routinely killed children. Zambia has spent decades building its immunisation programme.

But maintaining high coverage is essential.

UNICEF says Zambia’s health system continues to face outbreaks and emergencies involving diseases including polio, measles and cholera, alongside other pressures. It also notes that some of these are vaccine-preventable and that interruptions to routine health services can leave children vulnerable. (UNICEF)

In April 2026, Zambia launched another polio vaccination campaign targeting eligible children in six provinces as part of efforts to stop transmission. (UNICEF)

That demonstrates another reality of prevention: success is not permanent.

When vaccination, surveillance, sanitation or other preventive systems weaken, diseases can return.

Knowing What Works Is Not the Same as Reaching Everyone

This may be the central issue.

Many of Zambia’s major health problems do not persist because science lacks answers.

They persist partly because delivering those answers consistently to millions of people is much harder.

A mosquito net has to reach the household and be used correctly. A person with TB has to be diagnosed. Someone living with HIV needs sustained access to treatment. A child has to receive vaccinations at the appropriate time. Someone with hypertension has to be screened before complications occur.

And a family trying to prevent diarrhoeal disease needs something even more fundamental: reliable access to safe water and sanitation.

Healthcare infrastructure matters too. UNICEF reports that about 60 percent of health facilities in Zambia lack reliable electricity, affecting the delivery of essential services. (UNICEF)

Prevention, therefore, cannot simply mean telling people to “take responsibility for their health.”

Sometimes the difference between prevention and illness is whether the health system, water system, community or household has the resources necessary to make prevention possible.

Zambia Has Made Progress

It is equally important not to tell Zambia’s health story only through failure.

Maternal mortality has fallen substantially over the long term, child survival has improved, HIV treatment has transformed millions of lives, and Zambia has made significant progress against tuberculosis. The 2024 Zambia Demographic and Health Survey estimates maternal mortality at 187 deaths per 100,000 live births, compared with 278 in the earlier 2011–2017 reference period reported alongside it. (WHO | Regional Office for Africa)

These improvements demonstrate something important.

Preventable death can actually be reduced when prevention, diagnosis, treatment and access come together.

The Next Patient Should Not Have to Become a Statistic

There will always be disease. Not every case of malaria, cancer, TB, stroke or another major illness can be prevented, and even good medical treatment cannot save every patient.

But that is different from accepting avoidable deaths as inevitable.

The real measure of a health system is not simply whether treatment exists somewhere in the country. It is whether someone in a compound in Lusaka, a village in Western Province or a farming community in Eastern Province can benefit from it early enough.

Zambia already knows how to prevent or successfully treat many of the diseases taking its people.

The harder question is whether those solutions are consistently reaching people before it is too late.