statistically 1 out of every 2-3 of us has hsv1
and 1 out of every 4-5 has hsv2 - a lot of folks who take
humira, are already going to have herpes whether they know it or not! Of course you also can contract herpes simplex, either orally or genitally, while taking humira too.
It also can cause shingles to occur - you'd have to have had chicken pox in the past before starting humira in order to have a shingles reactivation.