Malaria or Typhoid? How Can You Tell the Difference?

Malaria or Typhoid? How Can You Tell the Difference?

You have a fever.

You feel weak. Your head hurts. You may have chills, body aches, loss of appetite, nausea or stomach discomfort.

Then someone says,

“It is probably malaria.”

Someone else says:

“It sounds like typhoid.”

This is a very common situation, particularly in places where both illnesses occur.

But there is an important problem with trying to distinguish malaria from typhoid based on symptoms alone:

The symptoms can overlap, and neither illness should simply be diagnosed by guesswork.

Malaria is caused by Plasmodium parasites transmitted mainly through the bites of infected female Anopheles mosquitoes. Typhoid fever is caused by the bacterium Salmonella Typhi and is usually associated with contaminated food or water.

So if you have a fever and are wondering whether it is malaria or typhoid, the safest approach is not to guess based on one symptom. Testing and professional assessment are important.

Important: This article provides general health education. It does not diagnose malaria, typhoid fever, or any other illness. If you are seriously unwell, pregnant, caring for a young child, or experiencing severe symptoms, seek medical care promptly.

Why malaria and typhoid are often confused

Malaria and typhoid are completely different infections, but their early symptoms can look surprisingly similar.

Malaria commonly causes:

Fever Chills Headache Weakness or fatigue Body aches Sometimes nausea or vomiting

WHO notes that the early symptoms of malaria can be mild and nonspecific, which can make it difficult to recognize without testing.

Typhoid fever can cause:

Prolonged fever Headache Fatigue Nausea Abdominal pain Constipation or diarrhea Sometimes vomiting Sometimes a rash

These symptoms can also occur in other infections, meaning symptoms alone usually cannot establish the diagnosis.

That is why the question should not simply be:

“Which symptoms do I have?”

A better question is

“What is causing my symptoms, and what test can help confirm it?”

What is malaria?

Malaria is an infectious disease caused by Plasmodium parasites.

It is transmitted primarily through the bites of infected female Anopheles mosquitoes.

The disease is particularly important in Africa. According to WHO, the African region accounted for approximately 95% of global malaria cases and malaria deaths in 2024.

The most common early symptoms include:

Fever Chills Headache

Other symptoms may occur, including weakness, muscle aches, nausea, and other signs of illness.

Importantly, malaria can become severe.

Severe malaria may cause:

Extreme weakness Confusion or impaired consciousness Convulsions Difficulty breathing Severe anemia Jaundice Dark or bloody urine Other serious complications

Severe symptoms require urgent medical care.

What is typhoid fever?

Typhoid fever is a bacterial infection caused by Salmonella Typhi.

The bacteria are usually transmitted through contaminated food or water and can spread through inadequate sanitation and poor food or water hygiene.

Unlike malaria, typhoid is not caused by mosquitoes.

Common symptoms include:

Prolonged fever Headache Fatigue Nausea Abdominal pain Constipation Diarrhoea Sometimes vomiting Sometimes a rash

Severe typhoid can lead to serious complications.

Typhoid is treatable with antibiotics, but antibiotic resistance is making treatment increasingly complicated in some settings.

Malaria vs typhoid: what is the difference?

The following comparison can help explain the general differences.

Feature Malaria and Typhoid Fever Cause Plasmodium parasites Salmonella Typhi bacteria Main transmission: infected Anopheles mosquito bites Contaminated food or water Fever: Common, often prolonged Chills commonly occur Headache Common Weakness/fatigue Common Common Abdominal pain may occur. Diarrhea may occur. Constipation is not a defining feature. Can occur Diagnosis: Malaria parasite testing Blood culture is preferred for confirmation. Main treatment: Antimalarial medicines appropriate to the infection Appropriate antibiotics Can it become severe? Yes, yes.

This table is a general educational comparison, not a diagnostic tool. Symptoms overlap substantially, and other infections can produce similar symptoms.

Can you have malaria and typhoid at the same time?

It is possible for a person to have more than one infection.

Therefore, finding one infection does not automatically prove that every symptom is caused by that infection.

For example, if someone has a confirmed malaria infection but continues to have significant symptoms or develops new symptoms, they may need further medical assessment rather than simply assuming that malaria explains everything.

Likewise, fever should not automatically be labelled "typhoid" simply because someone has abdominal discomfort or weakness.

The underlying cause needs to be assessed.

How is malaria diagnosed?

WHO recommends parasite-based testing for people suspected of having malaria.

The main methods include

Microscopic examination of blood Malaria rapid diagnostic tests (RDTs)

These tests look for evidence of malaria parasites or parasite-related markers in the blood.

This is important because fever can have many causes.

WHO explains that malaria testing helps healthcare providers distinguish malaria from other causes of fever and select appropriate treatment.

Why shouldn't you simply assume you have malaria?

Because treating every fever as malaria can mean that another illness is missed.

A person may have a bacterial infection, viral illness, typhoid fever, or another condition that requires a different approach.

Testing helps reduce that uncertainty.

How is typhoid diagnosed?

Typhoid diagnosis is different.

According to the CDC, blood culture is the mainstay of diagnosis for typhoid and paratyphoid fever. Multiple cultures may sometimes be needed because a single culture does not detect every infection.

This is particularly important because symptoms alone are not sufficiently specific.

What about the Widal test?

The Widal test is widely used in some settings, including parts of low- and middle-income countries.

However, the CDC states that serologic tests such as the Widal test are not recommended for diagnosing acute typhoid fever because of their high rate of false-positive results.

That does not mean every laboratory result labelled "typhoid" should automatically be accepted without context.

If you are told that you have typhoid based on a test result, ask the healthcare professional what test was performed and how the result was interpreted.

Why symptoms alone cannot reliably tell you

Imagine two people.

Person A

They have:

Fever Headache Chills Weakness

Those symptoms could occur with malaria, but they are not enough to establish the diagnosis.

Person B

They have:

Fever Headache Abdominal discomfort Weakness Diarrhoea

Those symptoms could occur with typhoid, but they could also occur with other infections.

This illustrates the problem.

Symptoms can raise suspicion. They do not always provide confirmation.

That distinction matters because malaria and typhoid require different treatments.

Should you take malaria medicine just because you have a fever?

Not automatically.

WHO recommends parasite-based testing for suspected malaria before treatment where quality-assured testing is available.

Taking medication without knowing what is causing your illness can delay appropriate treatment for another condition.

It can also expose you to unnecessary medication.

If you have a fever or other symptoms that could indicate malaria, seek appropriate testing and medical advice.

Should you take antibiotics if you think you have typhoid?

You should not start antibiotics simply because you suspect typhoid.

Typhoid is a bacterial infection, but several other illnesses can produce similar symptoms and would not necessarily benefit from antibiotics.

There is also an important public-health issue: antibiotic resistance.

WHO reports that increasing resistance to antibiotics is making typhoid treatment more complicated.

The appropriate antibiotic, if needed, should therefore be selected by a qualified healthcare professional based on the clinical situation and relevant testing.

What symptoms should make you seek urgent medical care?

A fever should receive prompt medical attention if you are becoming seriously unwell.

Seek urgent medical care if you experience symptoms such as:

Difficulty breathing Confusion Loss of consciousness Seizures or convulsions Severe weakness Persistent vomiting Severe dehydration Severe abdominal pain Significant bleeding Severe headache with concerning neurological symptoms Yellowing of the eyes or skin Very dark or bloody urine Rapid deterioration

WHO identifies impaired consciousness, multiple convulsions, difficulty breathing, dark or bloody urine, jaundice, and other severe features as signs associated with severe malaria.

Severe typhoid can also cause serious complications, including gastrointestinal bleeding and intestinal perforation.

If someone appears seriously ill, do not wait for an online symptom comparison to determine whether it is malaria or typhoid.

What about children?

Children deserve particular attention when they have a fever.

Young children can become seriously ill more quickly, and they may not be able to describe their symptoms clearly.

WHO identifies children under five as one of the groups at greatest risk of severe malaria. In 2024, children under five accounted for about three-quarters of malaria deaths in the WHO African Region.

Parents and caregivers should seek medical assessment when a child has a significant fever, especially when accompanied by:

Unusual sleepiness Difficulty waking Difficulty breathing Convulsions Persistent vomiting Poor feeding or inability to drink Signs of dehydration Severe weakness Confusion or unusual behavior

Do not rely on home diagnosis of "malaria" or "typhoid" in a seriously ill child.

What about pregnancy?

Fever during pregnancy deserves prompt medical assessment.

Pregnant women are among the groups at increased risk of severe malaria. Malaria during pregnancy can also contribute to complications, including premature delivery and low birth weight.

If you are pregnant and develop fever, chills, headache, or other symptoms suggestive of malaria or another infection, contact a qualified healthcare professional promptly.

Do not self-medicate based on advice from friends, social media, or previous illnesses.

How can you reduce your risk of malaria?

Because malaria is transmitted by infected mosquitoes, prevention focuses partly on reducing mosquito exposure.

Depending on your circumstances, preventive measures can include:

Sleeping under insecticide-treated mosquito nets Reducing mosquito exposure Using appropriate mosquito-control measures Following recommended malaria prevention measures in your area Seeking prompt testing when malaria is suspected

WHO recommends multiple malaria prevention approaches, including vector control and appropriate preventive medicines for specific populations and circumstances.

How can you reduce your risk of typhoid?

Typhoid prevention is closely connected to food, water, and sanitation.

Practical measures include:

Drink safe water. Wash your hands regularly with soap and safe water. Wash hands before preparing or eating food. Handle food safely. Avoid food and water that may be contaminated. Maintain good sanitation. Follow recommended vaccination guidance where applicable.

WHO identifies safe drinking water, sanitation, and food hygiene as important measures for reducing typhoid transmission.

What if your malaria test is negative?

A negative malaria test does not mean that there is nothing wrong with you.

It means malaria may not be the explanation for your symptoms, depending on the test used, timing and clinical circumstances.

WHO specifically recommends that people who test negative for malaria be assessed for other causes of fever.

Possible causes of fever are numerous.

Depending on your symptoms and circumstances, a healthcare professional may consider other infections or conditions and recommend additional tests.

This is another reason why repeatedly taking antimalarial medicine without assessment is not a good substitute for proper medical evaluation.

What if treatment isn't working?

If you have started treatment for malaria or typhoid and you are not improving as expected, contact a healthcare professional.

Do not simply keep taking additional medicines on your own.

Persistent fever may mean:

The original diagnosis needs to be reconsidered. The infection may be severe. The treatment may not be appropriate. The organism may be resistant to the medicine. There may be another infection or condition. More than one problem may be present.

A healthcare professional can determine what needs to happen next.

Malaria or typhoid: the most important thing to remember

The biggest mistake is assuming that every fever in Nigeria is malaria—or that prolonged fever automatically means typhoid.

Both illnesses are real.

Both can become serious.

But they are caused by different organisms, transmitted differently, and diagnosed and treated differently.

You cannot reliably distinguish malaria from typhoid by symptoms alone.

If you have a fever or other concerning symptoms, the safest approach is appropriate testing and professional assessment rather than guessing.

Frequently asked questions How can I tell if I have malaria or typhoid?

You cannot reliably tell from symptoms alone. Both can cause fever, headache, weakness, and other overlapping symptoms. Malaria should be evaluated with parasite-based testing, while typhoid is generally confirmed using appropriate laboratory testing, with blood culture being the preferred diagnostic method.

Can malaria and typhoid occur together?

Yes, a person can have more than one infection. If symptoms persist despite treatment for one diagnosed illness, further medical assessment may be necessary.

Does typhoid cause fever?

Yes. Prolonged fever is one of the characteristic symptoms of typhoid fever.

Does malaria cause stomach pain?

Malaria can produce a range of symptoms, and gastrointestinal symptoms can occur. However, stomach pain alone does not establish a diagnosis of malaria.

Is Widal test enough to diagnose typhoid?

The CDC does not recommend serologic tests such as the Widal test for diagnosing acute typhoid because of their high rate of false-positive results. Blood culture is the preferred diagnostic method.

Can you have malaria without chills?

Yes. Malaria symptoms vary between people, and the absence of chills does not rule it out. Testing is more reliable than symptom-based guessing.

How quickly can malaria become serious?

Malaria can progress rapidly, particularly Plasmodium falciparum infection. WHO states that untreated P. falciparum malaria can progress to severe illness and death, which is why prompt diagnosis and treatment are important.

Should I treat every fever as malaria?

No. WHO recommends parasite-based testing for suspected malaria where quality-assured testing is available. Other causes of fever should be considered when malaria testing is negative.

The bottom line

Malaria and typhoid are not the same illness, and symptoms alone cannot reliably tell you which one you have.

If you develop a fever, headache, chills, weakness, abdominal symptoms, or other signs of infection, avoid relying entirely on assumptions such as "it must be malaria" or "it must be typhoid."

Get appropriately assessed and tested.

And if you become seriously ill—particularly if you develop difficulty breathing, confusion, seizures, severe weakness, persistent vomiting, severe abdominal pain, or other emergency symptoms—seek urgent medical care.

The right diagnosis comes before the right treatment.

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This article is intended for general health education and does not replace professional medical diagnosis, treatment, or advice. Do not start or stop prescription medicines based solely on information in this article. Seek appropriate medical care for persistent, worsening, or severe symptoms.

Sources World Health Organization — Malaria. World Health Organization—Malaria diagnostic testing. World Health Organization — Typhoid. U.S. Centers for Disease Control and Prevention — Clinical Guidance for Typhoid Fever and Paratyphoid Fever. U.S. Centers for Disease Control and Prevention — Typhoid and Paratyphoid Fever.