The 1 in 4 figure for genital herpes comes from the CDC website based on their own statistics. Someone told me the figure once, I said bullshit and went to the site myself. The figure for oral herpes is something like 4 of 5 people and I do have oral herpes. On an interesting side note, one can give their partner genital herpes by performing oral sex while suffering an oral outbreak. I get an outbreak maybe once or twice a year for a week or so.