A microscopic parasite that can live for decades in the human brain infects an estimated one-third of the world's population - usually without causing symptoms. But in people with weakened immune ...

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.

Brain parasites can cause seizures and lifelong disabilities. Neurocysticercosis is the most common brain parasite infection worldwide. Good hygiene and proper food handling can lower the risk of ...