A 35-year-old Indian man who couldn't urinate learned his problem was being caused by a horrifying worm that can grow up to a metre in length inside the human body. Disturbing images published by ...

There are two types of human intestinal parasites, protozoa – single-celled organisms that can multiply inside the human body – and helminths, organisms such as tapeworms, roundworms and ...

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So far, no preventative vaccination against malaria exists, and its control depends heavily upon antimalarial drugs that kill parasites inside the human body. Malaria has been noted for more than ...

OSAKA--The parasite ... the body's self-defense system, humans can become infected repeatedly. Three years ago, the researchers realized that when plasmodium infects human red blood cells, it ...