New study sheds light on the causes of cold sores, herpes flare-ups

Herpes simplex virus-1 (HSV-1) is one of the most common human pathogens in existence, present in approximately 40–90% of the population worldwide. https://www.jpost.com/health-science/new-study-sheds-light-on-the-causes-of-cold-sores-herpes-flareups-658801