Malaria kills more than 1 million people each year.
In Africa, one child dies from malaria every 30 seconds.
In Madagascar, it kills more children under five that any other disease.
Malaria is transmitted by the female mosquito, which carries an infectious parasite in its stomach.
You can treat malaria with medicine but mosquitoes can change so that it no longer has an affect. This means scientists have to keep making new drugs.
Also, the drugs can't be taken for a long time as they can damage the liver and other organs.
The of the best ways to prevent malaria is to sleep under a bed net that has been treated with insecticide.
In 2004, Unicef gave out more than seven million nets.
Angeline is nine years old. She lives in a small village with her parents, brother and two sisters.
She says: "I sleep under this mosquito net at night.
There are lots of mosquitoes here, many of which give you malaria when they bite.
Last time I had malaria I was in bed for about five days with a headache and fever. I was sweating and trembling the whole time.
My favourite subject is French. I like playing Katra (a board games using beans as counters), made-up games and telling stories.
When I grow up, I would like to be a teacher, that way I can teach children to stay healthy."
1. What causes malaria?
2. How can it be prevented?
3. Have you ever been bitten by a mosquito? What happened?
4. Have you, or anyone you know, ever had malaria? What happened?
5. If you are travelling to a country that has malaria, what precautions can you take?