Cold sores are common

Two-thirds of the population under 50 have herpes simplex virus 1

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28 October 2015 – Around 67% of the population, under the age of 50, are infected with herpes simplex virus type 1 (HSV-1). This is according to WHO’s first global estimates. The new estimates highlight the fact that HSV-1 is an important cause of genital herpes.

WHO and its partners are working to accelerate development of HSV vaccines. These will have a crucial role in preventing these infections in the future.