Giardia lamblia- A FDA supported page with information on Giardia lamblia, a flagellated protozoan that causes diarrhea in humans.
National Center for Infectious Diseases- This CDC site has many links to information on bacterial, viral, protozoan, and worm-related diseases (primarily affecting humans).
The World Health Organization: Infectious Diseases- This site provides extensive information on malaria and other tropical diseases and the protozoans (and worms) that cause them. Very interesting site– lots to learn here!
