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Explainers

Malaria: The Illness We Know Too Well — and Still Get Wrong

Nigeria carries more of the world’s malaria than any other country. We’ve all had it, or nursed someone through it — which is exactly why the mistakes we make with it are so costly.

Ask anyone in Nigeria about malaria and you won’t get a blank look. We know the shivering that no blanket can fix. We know the bitterness of the drugs. We know the sound of a child crying through a feverish night, and the relief when the temperature finally breaks.

We know malaria so well, in fact, that we’ve grown a little casual with it. And that familiarity is part of the problem.

Here is the hard truth in the numbers: Nigeria carries more malaria than any country on earth. We account for nearly a quarter of all the world’s malaria cases and almost a third of all the deaths [WHO, 2025]. Ninety-seven out of every hundred Nigerians live where the disease can reach them [Severe Malaria Observatory, 2025]. And the people it kills most are our smallest — children under five make up about three in four malaria deaths across the region [WHO, 2025].

This isn’t a rare, faraway threat. It’s the one living in the puddle behind the house.

What malaria actually is

Malaria is caused by a tiny parasite, carried from person to person by the bite of a particular kind of mosquito — the ones that bite mostly at night. When an infected mosquito bites you, it passes the parasite into your blood, where it multiplies.

One thing worth clearing up: malaria does not spread from person to person like a cold. You cannot “catch” it from someone sneezing. It comes through the mosquito, and only the mosquito.

The first signs — fever, headache, chills — usually show up about 10 to 15 days after the bite [WHO, 2025]. That’s why the fever you have today might be from a bite you barely noticed two weeks ago.

The mistake that costs lives

Here’s where our familiarity turns dangerous. So many of us feel a fever coming, walk to the chemist, and buy malaria drugs on the spot — no test, just habit.

But not every fever is malaria. It might be typhoid, a viral infection, or something else entirely. Treating the wrong thing means the real illness keeps growing while you swallow medicine it will never touch. And with malaria drugs, using them when you don’t need them helps the parasite grow resistant — a threat the WHO now warns is rising across Africa [WHO, 2025].

The rule is simple, and it saves lives: test before you treat. A malaria test takes minutes and costs little at most health centres and pharmacies. If it’s positive, treat it properly. If it’s negative, you’ve just saved yourself from treating the wrong illness.

When malaria is an emergency

Most malaria, caught early and treated right, clears up. But in a young child, it can turn severe frighteningly fast — sometimes within a day [WHO, 2025]. Take a child to a health worker urgently if you see: a fever that won’t come down, refusal to eat or drink, unusual drowsiness or difficulty waking, convulsions, or fast, laboured breathing. Don’t wait it out. With children, hours matter.

How to protect your home

Sleep under a treated net — every night, everyone. It’s the single most effective thing you can do, especially for children and pregnant women.

Clear the breeding grounds. Mosquitoes breed in still water. Empty containers, tyres, buckets, and blocked gutters around your home.

Protect pregnancy. Malaria in pregnancy is dangerous for both mother and baby. Antenatal clinics offer preventive treatment — use it.

Test, then treat. Every fever. Every time.

The bigger picture

There’s real hope here. Malaria vaccines for children are now rolling out across Africa, bed nets keep improving, and testing is more available than ever [WHO, 2025]. Nigeria carries the heaviest load, but that also means we have the most to gain from getting the basics right.

We can’t sneeze away the mosquito. But a net over the bed, a cleared gutter, and a test before every treatment — those are within reach of every household. And together, they’re what turn malaria from a killer back into what it should be: an illness we treat, and our children survive.

Sources

  1. World Health Organization — World Malaria Report 2025.
  2. WHO — Malaria fact sheet, 2025.
  3. Severe Malaria Observatory — Nigeria country profile.

This does not replace seeing a health worker. If you notice these signs, visit your nearest primary health centre or speak to a doctor or nurse. Any costs mentioned are general estimates and vary by facility and state.

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