Nearly 850 species of parasites are known to infect people; some, like the potentially deadly plasmodium parasite that causes ...

Scientists have found over a dozen parasitic worms in the eyes of a black bear, renewing fears that humans could face an emerging danger from the tiny worms that can cause blindness. The black bear ...

To many parasitic worms, we are the world. And the way they've evolved to live within us — without wiping us out — is stunning. As a college undergraduate, I fell in love with parasitic worms. I was ...

A parasite called Toxoplasma gondii infects an enormous number of people around the world. Scientists estimate that up to one ...

A new study published by the CDC found this parasite becoming more widespread in areas it hadn't been seen before. A parasite that is typically found on rats and slugs but can jump to mammals is ...