World Malaria Report 2005

• 107 countries and territories had areas at risk of malaria transmission. Some 3.2 billion people lived in areas at risk of malaria transmission.
• An estimated 350–500 million clinical malaria episodes occur annually; most of these are caused by infection with P. falciparum and P. vivax.
• Falciparum malaria causes more than 1 million deaths each year.