One of the most common human parasites, Toxoplasma gondii, uses a hormone lifted from the plant world to decide when to increase its numbers and when to remain dormant, researchers at Washington ...

Here’s a comforting thought: you might not actually be alone in your own body right now. Parasites are far more common than most people realize, and they don’t care about your personal boundaries, ...

Discover 25 parasites you do not want to be infected with. Learn about their biology, transmission, and symptoms. Protect ...

From microscopic protozoa in drinking water to worms in undercooked pork, these organisms can cause everything from severe ...