A veterinarian in Ohio discovered that a tick found on one of her patients was an invasive species. A dog owner in Ohio brought their pet into Oxford Veterinary Hospital after the animal stepped on a ...

Parasites are dangerous creatures that survive off their hosts. Here are 12 common parasites that feed on the human body.

The parasite that causes the deadly disease malaria is full of tiny crystals that constantly spin—a mystery for decades. New ...

Malaria remains one of the world's most devastating infectious diseases, claiming more than half a million lives each year.

A human case of the flesh-eating New World Screwworm has been found in the United States in a person who traveled to El Salvador. The parasitic insect is actually a fly that looks similar to a ...

A cat parasite that can infect humans is called toxoplasma and it's a parasite that can live in all cat species. The parasite can spread to almost all other birds and mammals, not just humans, on ...