A life-threatening disease transmitted by bugs that bite humans’ faces is now endemic in the U.S., the Centers for Disease Control and Prevention has warned. Experts say that Chagas disease, also ...

Brain parasite cysts contain multiple active forms, not dormant cells, explaining treatment resistance and reactivation patterns.

People typically become infected with toxoplasmosis by eating undercooked meat or through contact with contaminated soil or cat feces. Once inside the body, the parasite is known for its ability to ...

Three types of parasites can cause disease in humans. They are protozoa, carried by mosquitos, helminths, such as roundworm, and ectoparasites, for instance lice and bed bugs. Parasites are organisms ...