This is 100% false. Per Mertz, Annals of Internal Medicine, 1992, previous oral HSV-1 infection reduces the acquisition of subsequent HSV-2 infection by 40%. Th

This is 100% false. Per Mertz, Annals of Internal Medicine, 1992, previous oral HSV-1 infection reduces the acquisition of subsequent HSV-2 infection by 40%. That is not immunity.