About 3.3 billion people - half of the world’s population - are at risk of malaria. Every year, this leads to about 250 million malaria cases and nearly one million deaths. People living in the poorest countries are the most vulnerable.
The theme of World Malaria Day 2011, Achieving Progress and Impact, highlights the successes of the past decade, as well as remaining challenges to achieving near zero deaths by 2015. Five years ago, malaria killed nearly one million people each year—most of them children. In Africa alone, the burden of the disease cost the continent $12 billion a year in lost productivity.