Epilepsy, one of the most common neurological disorders characterized by recurrent seizures, affects over 70 million people worldwide.

The single-celled parasite Entamoeba histolytica infects 50 million people each year, killing nearly 70,000. Usually, this wily, shape-shifting amoeba causes nothing worse than diarrhea.

The Food and Drug Administration's approval in 2023 of lecanemab - a novel Alzheimer's therapy shown in clinical trials to modestly slow disease progression - was met with enthusiasm by many in the ...