Can a person be carrier of herpes and not symptomatic?

Yes, a significant number of people who are infected with a herpes simplex virus (HSV) do not display obvious signs or experience any symptoms. HSV infections can be dormant (latent), hiding in nerve ganglia, with the potential to reactivate sporadically, causing occurrences of blistering lesions commonly referred to as "cold sores" or "fever blisters" in the case of HSV-1 or genital herpes in the case of HSV-2.