Source:University of WashingtonCold sore viral infection implicated in development of Alzheimer’s diseaseReference:Liu Y, Johnston C, Jarousse N, et al Association between herpes simplex virus type 1 and the risk of Alzheimer’s disease: a retrospective case–control study BMJ Open 2025;15:e093946. doi: 10.1136/bmjopen-2024-093946