I must admit I was very ignorant about herpes and didn't know what it was, until I asked for advice about how to avoid it on a visit to the NHS GUM clinic when I got into the business, I wondered why to work in porn you had to be tested for all STIs, but herpes was never asked for on my test certificate. They told me they only tested for herpes if you are on an outbreak/have symptoms, if they did a blood test on everyone, a high percentage of the UK population would have it, many of us would never have had an outbreak and know we have it.
Lots of people have cold sores on their lips and work in the sex industry, they are just sensible and don't work when they have an outbreak, same for people who have the same sores on their genitals. I am just amazed at how funny people get about it.
I know in the online literature it says you can spread it when you are not on an outbreak, but that was not the opinion of the GU clinic I used to visit who said that was highly unlikely. If sex workers with herpes oral or genital had to quit working because of it, then a huge percentage of the escort population would have to quit. Same for our clients, if we didn't see clients who had ever had a coldsore/herpes we would exclude most of our clients.