Protozoa

Infectious diseases are caused by prions, viruses, rickettsia, chlamydia, bacteria, pathogenic fungi and protozoa.

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Roughly 253 scientists from 21 countries worked for five years to decipher the genetic blueprints of the single-cell parasites that cause sleeping sickness, leishmaniasis and Chagas disease. Experts say the disease-causing protozoa, which affect 500 million people in the tropics and sub-tropics at any one time, look identical under the microscope, but are spread by different flying insects.

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The parasite is a one-cell protozoa like ones you might have seen under a classroom microscope, floating around in fluid.

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The researcher's team chose to study 10 common species of the ciliated protist – or protozoa microorganisms – because of their ability to reproduce.

Source: tatoeba (12396756)