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Worst parasites in the world

By By Teresa Bergen Slide 1 of 24: new caption

While Ebola currently grabs the headlines, parasites impact millions of people around the world, year in and year out. In fact, the number one parasitic disease kills about a million people annually. 

Plasmodium parasites

Four different types of plasmodium parasite carried by mosquitoes cause malaria in humans, which kills more than 1 million people annually. Since the case will be worse if the parasite is more developed, places with the longest-lived mosquitoes pose the greatest danger.

© James Gathany/MediaforMedical/Getty Images
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