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Every year, it kills around 660,000 people and infects more than 200 million. Ninety percent of these deaths occur in sub-Saharan Africa.
Despite malaria mortality rates falling by 25 percent since 2000, a child in Africa still dies every minute from malaria.
Malaria is most common in poor, deprived areas. In many cases, malaria itself is the cause of such poverty: malaria causes havoc on a socioeconomic level as patients are often bedridden and incapable of carrying out normal daily tasks, resulting in burdens on households and health services, and ultimately huge losses to income in malaria-endemic countries.
This suffering and loss of life are tragically unnecessary because malaria is largely preventable, detectable and treatable.
While ninety percent of malaria deaths occur in sub-Saharan Africa, the disease is present in nearly every tropical area where MSF carries out field programmes: from Ethiopia and Sierra Leone to Cambodia and Myanmar.
Hover over the image below for an interactive guide to malaria
Malaria is a parasitic infection transmitted from person to person by the bite of infected female Anopheles mosquitoes.
These mosquitoes usually bite from around dusk to dawn.
Once transferred to the human body, the infection travels to the liver where it multiplies and then enters the red blood cells.
Inside the red blood cells the parasites multiply rapidly until they burst, releasing even more parasites into the blood stream.
There are four main species of the malaria parasite: Plasmodium falciparum, Plasmodium malariae, Plasmodium vivax and Plasmodium ovale.
P. falciparum is the main cause of severe clinical malaria and death.
Malaria begins as a flu-like illness, with symptoms first occurring 9-14 days after infection. Symptoms include fever (typical cycles of fever, shaking chills, and drenching sweats may develop), joint pain, headaches, frequent vomiting, convulsions and coma.
If simple malaria is left untreated, it can become severe – around eight million malaria cases progress to severe malaria annually.
Death from malaria may be due to brain damage (cerebral malaria), or damage to vital organs. The reduction of red blood cells can cause anaemia.
Diagnosing malaria is done with rapid dipstick tests or looking for the parasite under a microscope in a blood smear.
However, rapid tests are not always available, microscopy is not always straightforward and, as a result, diagnosis based on symptoms is still normal in much of the developing world.
This means patients are often misdiagnosed and the real reasons for their symptoms go untreated. It also means anti-malarial drugs are overused and go to waste when they are desperately needed.
The most effective treatment for malaria is artemisinin-based combination therapy (ACTs). ACTs have low toxicity, few side effects and act rapidly against the parasite.
Today, 41 out of 54 African countries have officially changed their protocol to treat first-line malaria with ACTs. But in many places where MSF works, ACTs are scarcely available.
The global need for ACTs is estimated to be at 300 to 500 million treatment courses per year, however, in 2006, drugs for less than 90 million treatments were purchased.
A three-day course of anti-malarial pills for a baby can cost as little as 25 pence.
Long lasting insecticide-treated bed nets are an important means of controlling malaria. In endemic areas, MSF distributes nets to pregnant women and children under the age of five, who are most vulnerable to severe malaria.
This page was last updated on 22 September 2016