Widespread Parasite Linked to Cognition Changes Sparks Call for Policy Action

A parasite called toxoplasma gondii, commonly spread via cat feces, undercooked meat, and contaminated water, infects roughly one-third of humans and can cause eye, brain, and possibly cognitive changes; there is no cure or vaccine. Researchers urge recognizing toxoplasmosis as a neglected tropical disease to mobilize resources for research and public health efforts, a move that could alleviate a disproportionate burden on poorer populations.