Global and regional estimates of the number of existing (prevalent) cases of HSV-1 infection in 2012 by age and sex, in millions (percentage of population with prevalent infection shown in parentheses).

Totals may be slightly different due to rounding. Sex-specific estimates for Africa, Eastern Mediterranean, South-East Asia and Western Pacific were generated by applying modelled prevalence, fitted without stratification by sex, to sex-specific population sizes. Slight differences in prevalence averaged across all ages between the sexes for these regions are therefore due to different population sizes by sex.Global and regional estimates of the number of existing (prevalent) cases of HSV-1 infection in 2012 by age and sex, in millions (percentage of population with prevalent infection shown in parentheses).