A common parasite long thought to lie dormant is actually much more active and complex. Researchers found that Toxoplasma gondii cysts contain multiple parasite subtypes, not just one sleeping form.

A microscopic parasite that quietly settles into the brain of humans and animals is not nearly as quiet as scientists once believed. New work on Toxoplasma gondii suggests that the so‑called dormant ...

Haupt is a health and wellness editor at TIME. Haupt is a health and wellness editor at TIME. There are more parasites than any other organism on Earth—which is one of the reasons Emmitt Jolly finds ...

Every cell of the deadly Plasmodium falciparum parasite, the organism that causes malaria, contains a tiny compartment full of microscopic iron crystals. As long as the parasite is alive, the crystals ...