Human botfly larvae, for example, burrow under your skin, forming a pus-filled pimple. Meanwhile, thousands of young Loa loa worms can travel throughout your body —even across your eyeball!

which causes skin diseases and blindness. In both worms, the researchers saw viruses under a microscope — specifically, they ...

In a rare medical case, parasitic worms grew underneath a woman's upper eyelid.

Nobel Prize-winning peacemaker Jimmy Carter spent nearly four decades waging war to eliminate an ancient parasite plaguing the world’s poorest people.