Herpes simplex virus type 1 (HSV-1), the virus that causes cold sores, reshapes microglia in a narrow region of the brainstem, according to new research led by the University of Colorado Anschutz; whether the changes last, or matter for Alzheimer’s risk, is unknown. Micrograph of a herpes simplex virus. Image credit: CDC / Erskine Palmer. HSV-1 infects a large share of the world’s population and lies dormant in nerve cells for life. Although serious...
