GUARDIAN: Two-thirds of the world’s population under 50 have the highly infectious herpes virus that causes cold sores around the mouth, said the World HealthOrganization in its first estimate of global prevalence of the disease…
HSV-1 normally causes mouth ulcers rather than genital infection, but it is becoming an increasing cause of genital infection too, mainly in rich countries.
That is because improved hygiene in rich countries is lowering HSV-1 infection rates in childhood, leaving young people more at risk of catching it via oral sex when they become sexually active… (more)
